Exhibit 3.4

AMENDED AND RESTATED

BYLAWS OF

MGP FINANCE CO-ISSUER, INC.

(a Delaware corporation)

ARTICLE I

Stockholders

SECTION 1. Annual Meetings. The annual meeting of the stockholders of MGP Finance Co-Issuer, Inc. (the “Corporation”) for the election of directors and for the transaction of such other business as may properly come before the meeting shall be held each year at such date and time, within or without the State of Delaware, as the board of directors of the Corporation (the “Board of Directors”) shall determine. If any date so determined shall be a legal holiday in the place at which the meeting is to be held, the meeting shall be held on the next succeeding business day. At each annual meeting the stockholders shall vote to elect a Board of Directors and at any such meeting such other corporate business as may properly come before the meeting may be transacted. The Board of Directors may postpone, reschedule, adjourn, recess or cancel any annual meeting previously scheduled by the Board of Directors.

SECTION 2. Special Meetings. Special meetings of stockholders for the transaction of such business as may properly come before the meeting may be called by order of the Board of Directors or by stockholders holding together at least a majority of all the shares of the Corporation entitled to vote at the meeting, and shall be held at such date and time, within or without the State of Delaware, as may be specified by such order. Whenever the directors shall fail to fix such place, the meeting shall be held at the principal executive office of the Corporation.

SECTION 3. Notice of Meetings. Written notice of all meetings of the stockholders, stating the place, date and hour of the meeting, the means of remote communications, if any, by which stockholders and proxy holders may be deemed to be present in person and vote at such meeting, and the place within the city or other municipality or community at which the list of stockholders may be examined, shall be mailed or delivered to each stockholder entitled to vote at such meeting not less than 10 nor more than 60 days prior to the meeting. Notice of any special meeting shall state in general terms the purpose or purposes for which the meeting is to be held.

SECTION 4. Stockholder Lists. The officer who has charge of the stock ledger of the Corporation shall prepare and make, at least 10 days before every meeting of stockholders, a complete list of the stockholders entitled to vote at the meeting, arranged in alphabetical order, and showing the address of each stockholder and the number and class of shares registered in the name of each stockholder. Such list shall be open to the examination of any stockholder, for any purpose germane to the meeting, either at a place within the city where the meeting is to be held, which place shall be specified in the notice of the meeting, or, if not so specified, at the place where the meeting is to be held. The list shall also be produced and kept at the time and place of the meeting during the whole time thereof, and may be inspected by any stockholder who is present.

The stock ledger shall be the only evidence as to who are the stockholders entitled to examine the stock ledger, the list required by this section or the books of the Corporation, or to vote in person or by proxy at any meeting of stockholders.

SECTION 5. Quorum. Except as otherwise provided by law or the Corporation’s Certificate of Incorporation (the “Certificate of Incorporation”), a quorum for the transaction of business at any meeting of stockholders shall consist of the holders of record of a majority of the issued and outstanding shares of the capital stock of the Corporation entitled to vote at the meeting, present in person or by proxy. At all meetings of the stockholders at which a quorum is present, all matters, except as otherwise provided by law or the Certificate of Incorporation, shall be decided by the vote of the holders of a majority of the shares entitled to vote thereat present in person or by proxy. If less than a quorum shall be in attendance at the time for which a meeting shall have been called, the meeting may be adjourned from time to time by the Chairman of the meeting or a majority vote of the stockholders present or represented by proxy, without any notice other than by announcement at the meeting (if the adjournment is for 30 days or less), until a quorum shall attend. Any meeting at which a quorum is present may also be adjourned, in like manner, for such time or upon such calls as may be determined by vote. At any adjourned meeting at which a quorum shall attend, any business may be transacted which might have been transacted at the meeting as originally called. When a quorum is once present it is not broken by the subsequent withdrawal of any stockholder.

SECTION 6. Organization. Meetings of stockholders shall be presided over by the Chairman, if any, or if none or in the Chairman’s absence the Vice-Chairman, if any, or if none or in the Vice-Chairman’s absence, the Chief Executive Officer (the “CEO”), if any, or if none or in the CEO’s absence, the Chief Financial Officer (the “CFO”), if any, or if none or in the CFO’s absence, the President, if any, or if none or in the President’s absence a Vice-President, or, if none of the foregoing is present, by a chairman to be chosen by the stockholders entitled to vote who are present in person or by proxy at the meeting. The Secretary of the Corporation, or in the Secretary’s absence an Assistant Secretary, shall act as secretary of every meeting, but if neither the Secretary nor an Assistant Secretary is present, the presiding officer of the meeting shall appoint any person present to act as secretary of the meeting.

SECTION 7. Voting; Proxies; Required Vote.

(a) At each meeting of stockholders, every stockholder entitled to vote at such meeting shall be entitled to vote in person or by proxy appointed by instrument in writing, subscribed by such stockholder or by such stockholder’s duly authorized attorney-in-fact (but no such proxy shall be voted or acted upon after three years from its date, unless the proxy provides for a longer period), and, unless the Certificate of Incorporation provides otherwise, shall have one vote for each share of stock entitled to vote registered in the name of such stockholder on the books of the Corporation on the applicable record date fixed pursuant to these Bylaws. At all elections of directors the voting may be, but need not be, by ballot and a plurality of the votes cast there shall elect such directors. Except as otherwise required by law or the Certificate of Incorporation, any other action shall be authorized by a majority of the votes cast.

(b) Any action which is required or may be taken at any annual or special meeting of stockholders may be taken without a meeting in accordance with the Delaware General Corporation Law.

SECTION 8. Inspectors. The Board of Directors, in advance of any meeting, may, but need not, appoint one or more inspectors of election to act at the meeting or any adjournment thereof. If an inspector or inspectors are not so appointed, the person presiding at the meeting may, but need not, appoint one or more inspectors. In case any person who may be appointed as an inspector fails to appear or act, the vacancy may be filled by appointment made by the directors in advance of the meeting or at the meeting by the person presiding thereat. Each inspector, if any, before entering upon the discharge of his or her duties, shall take and sign an oath faithfully to execute the duties of inspector at such meeting with strict impartiality and according to the best of his or her ability. The inspectors, if any, shall

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determine the number of shares of stock outstanding and the voting power of each, the shares of stock represented at the meeting, the existence of a quorum, and the validity and effect of proxies, and shall receive votes, ballots or consents, hear and determine all challenges and questions arising in connection with the right to vote, count and tabulate all votes, ballots or consents, determine the result, and do such acts as are proper to conduct the election or vote with fairness to all stockholders. On request of the person presiding at the meeting, the inspector or inspectors, if any, shall make a report in writing of any challenge, question or matter determined by such inspector or inspectors and execute a certificate of any fact found by such inspector or inspectors.

ARTICLE II

Board of Directors

SECTION 1. General Powers. The business, property and affairs of the Corporation shall be managed by, or under the direction of, the Board of Directors.

SECTION 2. Qualification; Number; Term; Compensation.

(a) Each director shall be at least 18 years of age. A director need not be a stockholder, a citizen of the United States or a resident of the State of Delaware. The number of directors constituting the entire Board of Directors shall be one, or such larger number as may be fixed from time to time by the Board of Directors, one of whom may be selected by the Board of Directors to be its Chairman. The use of the phrase “entire Board of Directors” herein refers to the total number of directors which the Corporation would have if there were no vacancies.

(b) Directors who are elected at an annual meeting of stockholders, and directors who are elected in the interim to fill vacancies and newly created directorships, shall hold office until the next annual meeting of stockholders and until their successors are elected and qualified or until their earlier resignation or removal.

(c) Unless otherwise restricted by the Certificate of Incorporation or these Bylaws, the Board of Directors shall have the authority to fix the compensation of directors. The directors may be paid their expenses, if any, of attendance at each meeting of the Board of Directors and may be paid a fixed sum for attendance at each meeting of the Board of Directors or a stated salary as director. No such payment shall preclude any director from serving the Corporation in any other capacity and receiving compensation therefor. Members of special or standing committees may be allowed like compensation for attending committee meetings.

SECTION 3. Quorum and Manner of Voting. Except as otherwise provided by law, a majority of the entire Board of Directors shall constitute a quorum. A majority of the directors present, whether or not a quorum is present, may adjourn a meeting from time to time to another time and place without notice. The vote of the majority of the directors present at a meeting at which a quorum is present shall be the act of the Board of Directors.

SECTION 4. Places of Meetings. Meetings of the Board of Directors may be held at any place within or without the State of Delaware, as may from time to time be fixed by resolution of the Board of Directors, or as may be specified in the notice of meeting.

SECTION 5. Annual Meeting. Following the annual meeting of stockholders, the newly elected Board of Directors shall meet for the purpose of the election of officers and the transaction of such other business as may properly come before the meeting. Such meeting may be held without notice immediately after the annual meeting of stockholders at the same place at which such stockholders’ meeting is held.

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SECTION 6. Regular Meetings. Regular meetings of the Board of Directors shall be held at such times and places as the Board of Directors shall from time to time determine by resolution. Notice need not be given of regular meetings of the Board of Directors held at times and places fixed by resolution of the Board of Directors.

SECTION 7. Special Meetings. Special meetings of the Board of Directors shall be held whenever called by the Chairman of the Board, the CEO, the CFO, the President or by any director then in office. Notice of the place, date and time and the purpose or purposes of each special meeting of the Board of Directors shall be given to each director by e-mail to an e-mail address previously provided to the Corporation not later than 48 hours before the date of the meeting.

SECTION 8. Meetings by Means of Conference Telephone. Unless otherwise provided by the Certificate of Incorporation or these Bylaws, members of the Board of Directors, or any committee designated by the Board of Directors, may participate in a meeting of the Board of Directors or such committee by means of a conference telephone or similar communication equipment by means of which all persons participating in the meeting can hear each other, and such participation in a meeting pursuant to this Section 8 shall constitute presence at such meeting.

SECTION 9. Chairman of the Board. The Chairman of the Board of Directors, if there be one, shall preside at all meetings of the Board of Directors and shall have such other powers and duties as may from time to time be assigned by the Board of Directors.

SECTION 10. Resignation; Removal. Any director may resign at any time upon written notice to the Corporation and such resignation shall take effect upon receipt thereof by the Corporation, unless otherwise specified in the resignation. Any or all of the directors may be removed, with or without cause, by the holders of a majority of the shares of stock outstanding and entitled to vote for the election of directors.

SECTION 11. Vacancies. Unless otherwise provided in these Bylaws, vacancies on the Board of Directors, whether caused by resignation, death, disqualification, removal, an increase in the authorized number of directors or otherwise, may be filled by the affirmative vote of a majority of the remaining directors, although less than a quorum, or by a sole remaining director, or at a special meeting of the stockholders, by the holders of shares entitled to vote for the election of directors.

SECTION 12. Action by Written Consent. Any action required or permitted to be taken at any meeting of the Board of Directors may be taken without a meeting in accordance with the Delaware General Corporation Law.

SECTION 13. Committees. The Board of Directors may, by resolution passed by a majority of the entire Board of Directors, designate one or more committees, each such committee to consist of one or more of the directors of the Corporation. The Board of Directors may designate one or more directors as alternate members of any committee, who may replace any absent or disqualified member at any meeting of any such committee. In the absence or disqualification of a member of a committee, and in the absence of a designation by the Board of Directors of an alternate member to replace the absent or disqualified member, the member or members thereof present at any meeting and not disqualified from voting, whether or not he, she or they constitute a quorum, may unanimously appoint another member of the Board of Directors to act at the meeting in the place of any absent or disqualified member. Any committee, to the extent allowed by law and provided in the resolution establishing such committee, shall

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have and may exercise all the powers and authority of the Board of Directors in the management of the business and affairs of the Corporation; but no such committee shall have the power or authority in reference to amending the Certificate of Incorporation, adopting an agreement of merger or consolidation, recommending to the stockholders the sale, lease or exchange of all or substantially all of the Corporation’s property and assets, recommending to the stockholders a dissolution of the Corporation or a revocation of a dissolution, or amending these Bylaws. Each committee shall keep regular minutes of its meetings and report the same to the Board of Directors when required.

ARTICLE III

Officers

SECTION 1. Election and Qualifications. The Board of Directors shall elect the officers of the Corporation, which shall include a President and a Secretary, and may include, by election or appointment, a CEO, a CFO, one or more Vice-Presidents (any one or more of whom may be given an additional designation of rank or function), a Treasurer and such Assistant Secretaries, such Assistant Treasurers and such other officers as the Board of Directors may from time to time deem proper. Each officer shall have such powers and duties as may be prescribed by these Bylaws and as may be assigned by the Board of Directors or the President. Any two or more offices may be held by the same person.

SECTION 2. Term of Office and Remuneration. The term of office of all officers shall be one year and until their respective successors have been elected and qualified. Any vacancy in any office arising from any cause may be filled for the unexpired portion of the term by the Board of Directors. The remuneration of all officers of the Corporation may be fixed by the Board of Directors or in such manner as the Board of Directors shall provide.

SECTION 3. Resignation; Removal. Any officer may resign at any time upon written notice to the Corporation and such resignation shall take effect upon receipt thereof by the Corporation, unless otherwise specified in the resignation. Any officer shall be subject to removal, with or without cause, at any time by vote of a majority of the entire Board of Directors.

ARTICLE IV

Books and Records

SECTION 1. Location. The books and records of the Corporation may be kept at such place or places within or outside the State of Delaware as the Board of Directors or the respective officers in charge thereof may from time to time determine. The record books containing the names and addresses of all stockholders, the number and class of shares of stock held by each and the dates when they respectively became the owners of record thereof shall be kept by the Secretary as prescribed in these Bylaws.

SECTION 2. Addresses of Stockholders. Notices of meetings and all other corporate notices may be delivered personally or mailed to each stockholder at the stockholder’s address as it appears on the records of the Corporation.

SECTION 3. Record Date. In order that the Corporation may determine the stockholders entitled to notice of or to vote at any meeting of stockholders or any adjournment thereof, or entitled to express consent to corporate action in writing without a meeting, or entitled to receive payment of any dividend or other distribution or allotment of any rights, or entitled to exercise any rights in respect of any change, conversion or exchange of stock, or for the purpose of any other lawful action, the Board of

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Directors may fix, in advance, a record date, which shall not be more than 60 nor less than 10 days before the date of such meeting, and no more than 60 days prior to any other action. A determination of stockholders of record entitled to notice of or to vote at a meeting of stockholders shall apply to any adjournment of the meeting; provided, however, that the Board of Directors may fix a new record date for the adjourned meeting.

ARTICLE V

Certificates Representing Stock

SECTION 1. Certificates; Signatures. The shares of the Corporation shall be represented by certificates, provided that the Board of Directors of the Corporation may provide by resolution or resolutions that some or all of any or all classes or series of its stock shall be uncertificated shares. Any such resolution shall not apply to shares represented by a certificate until such certificate is surrendered to the Corporation. Notwithstanding the adoption of such a resolution by the Board of Directors, every holder of stock represented by certificates and upon request every holder of uncertificated shares shall be entitled to have a certificate, signed by or in the name of the Corporation by the Chairman or Vice-Chairman of the Board of Directors, or the President or Vice-President, and by the Treasurer or an Assistant Treasurer, or the Secretary or an Assistant Secretary of the Corporation, representing the number of shares registered in certificate form. Any and all signatures on any such certificate may be facsimiles. In case any officer, transfer agent or registrar who has signed or whose facsimile signature has been placed upon a certificate shall have ceased to be such officer, transfer agent or registrar before such certificate is issued, it may be issued by the Corporation with the same effect as if he or she were such officer, transfer agent or registrar at the date of issue. The name of the holder of record of the shares represented thereby, with the number of such shares and the date of issue, shall be entered on the books of the Corporation.

SECTION 2. Transfers of Stock. Upon compliance with provisions restricting the transfer or registration of transfer of shares of stock, if any, shares of capital stock shall be transferable on the books of the Corporation only by the holder of record thereof in person, or by a duly authorized attorney, upon surrender and cancellation of certificates for a like number of shares, properly endorsed, and the payment of all taxes due thereon.

SECTION 3. Fractional Shares. The Corporation may, but shall not be required to, issue certificates for fractions of a share where necessary to effect authorized transactions, or the Corporation may pay in cash the fair value of fractions of a share as of the time when those entitled to receive such fractions are determined, or it may issue scrip in registered or bearer form over the manual or facsimile signature of an officer of the Corporation or of its agent, exchangeable as therein provided for full shares, but such scrip shall not entitle the holder to any rights of a stockholder except as therein provided.

SECTION 4. Rules and Regulations. The Board of Directors shall have power and authority to make all such rules and regulations as it may deem expedient concerning the issue, transfer and registration of certificates representing shares of the Corporation.

SECTION 5. Lost, Stolen or Destroyed Certificates. The Corporation may issue a new certificate of stock in place of any certificate, theretofore issued by it, alleged to have been lost, stolen or destroyed, and the Board of Directors may require the owner of any lost, stolen or destroyed certificate, or his legal representative, to give the Corporation a bond sufficient to indemnify the Corporation against any claim that may be made against it on account of the alleged loss, theft or destruction of any such certificate or the issuance of any such new certificate.

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ARTICLE VI

Dividends

Dividends upon the capital stock of the Corporation, subject to the provisions of the Certificate of Incorporation, if any, may be declared by the Board of Directors at any regular or special meeting, and may be paid in cash, in property or in shares of the capital stock. Before payment of any dividend, there may be set aside out of any funds of the Corporation available for dividends such sum or sums as the Board of Directors from time to time, in its absolute discretion, deems proper as a reserve or reserves to meet contingencies, or for equalizing dividends, or for repairing or maintaining any property of the Corporation, or for any other purpose, and the Board of Directors may modify or abolish any such reserve.

ARTICLE VII

Ratification

Any transaction, questioned in any lawsuit on the ground of lack of authority, defective or irregular execution, adverse interest of director, officer or stockholder, non-disclosure, miscomputation, or the application of improper principles or practices of accounting, may be ratified before or after judgment, by the Board of Directors or by the stockholders, and if so ratified shall have the same force and effect as if the questioned transaction had been originally duly authorized. Such ratification shall be binding upon the Corporation and its stockholders and shall constitute a bar to any claim or execution of any judgment in respect of such questioned transaction.

ARTICLE VIII

Fiscal Year

The fiscal year of the Corporation shall be fixed, and shall be subject to change, by the Board of Directors. Unless otherwise fixed by the Board of Directors, the fiscal year of the Corporation shall be the calendar year.

ARTICLE IX

Waiver of Notice

Whenever notice is required to be given by these Bylaws or by the Certificate of Incorporation or by law, a written waiver thereof, signed by the person or persons entitled to such notice, whether before or after the time stated therein, shall be deemed equivalent to notice.

ARTICLE X

Bank Accounts, Drafts, Contracts, Etc.

SECTION 1. Bank Accounts and Drafts. In addition to such bank accounts as may be authorized by the Board of Directors, the primary financial officer or any person designated by said primary financial officer, whether or not an employee of the Corporation, may authorize such bank accounts to be opened or maintained in the name and on behalf of the Corporation as he may deem necessary or appropriate, payments from such bank accounts to be made upon and according to the check of the Corporation in accordance with the written instructions of said primary financial officer, or other person so designated by the Treasurer.

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SECTION 2. Contracts. The Board of Directors may authorize any person or persons, in the name and on behalf of the Corporation, to enter into or execute and deliver any and all deeds, bonds, mortgages, contracts and other obligations or instruments, and such authority may be general or confined to specific instances.

SECTION 3. Proxies; Powers of Attorney; Other Instruments. The Chairman of the Board of Directors, the President, the CEO, the CFO or any other person designated by either of them shall have the power and authority to execute and deliver proxies, powers of attorney and other instruments on behalf of the Corporation in connection with the rights and powers incident to the ownership of stock by the Corporation. The Chairman of the Board of Directors, the President, the CEO, the CFO or any other person authorized by proxy or power of attorney executed and delivered by either of them on behalf of the Corporation may attend and vote at any meeting of stockholders of any company in which the Corporation may hold stock, and may exercise on behalf of the Corporation any and all of the rights and powers incident to the ownership of such stock at any such meeting, or otherwise as specified in the proxy or power of attorney so authorizing any such person. The Board of Directors, from time to time, may confer like powers upon any other person.

SECTION 4. Financial Reports. The Board of Directors may appoint the primary financial officer or other fiscal officer or any other officer to cause to be prepared and furnished to stockholders entitled thereto any special financial notice and/or financial statement, as the case may be, which may be required by any provision of law.

ARTICLE XI

Indemnification

SECTION 1. Scope. The Corporation shall, to the fullest extent permitted by the Delaware General Corporation Law, indemnify any director or officer of the Corporation against expenses (including attorneys’ fees), judgments, fines, amounts paid in settlement and/or other matters referred to in or covered by such section, by reason of the fact that such person is or was a director or officer of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise. In addition, the Corporation may, to the fullest extent permitted by the Delaware General Corporation Law, indemnify any employee or agent of the Corporation against expenses (including attorneys’ fees), judgments, fines, amounts paid in settlement and/or other matters referred to in or covered by such section, by reason of the fact that such person is or was an employee or agent of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise.

SECTION 2. Advancing Expenses. The Corporation may to the fullest extent not prohibited by law pay the expenses, including attorneys’ fees, incurred by a director or officer in defending any proceeding in advance of the final disposition of the proceeding, provided, however, that, to the extent required by law, the payment of expenses in advance of the final disposition of the proceeding shall be made only following receipt of an undertaking by the director or officer to repay all amounts advanced if it is ultimately determined that the director or officer is not entitled to be indemnified under this Article XI or pursuant to any other Bylaw, agreement or action by the Board of Directors or stockholders.

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SECTION 3. Liability Offset. The Corporation’s obligation, if any, to indemnify or to advance expenses to any director or officer who serves or served at the request of the corporation as a director, officer, manager, member, partner, trustee, employee or agent of another entity, including service with respect to an employee benefit plan, shall be reduced by any amount the director or officer has collected as indemnification or advancement of expenses from the other entity.

SECTION 4. Nonexclusive. The indemnification and advancement of expenses provided for under this Article XI shall (i) not be deemed exclusive of any other rights to which those indemnified may be entitled under any Bylaw, agreement or vote of stockholders or disinterested directors or otherwise, both as to action in their official capacities and as to action in another capacity while holding such office, (ii) continue unto a person who has ceased to be a director and (iii) inure to the benefit of the heirs, executors and administrators of such a person.

SECTION 5. Other Persons. In addition to the indemnification rights of directors, officers, employees or agents of the Corporation, the Board of Directors in its discretion shall have the power, on behalf of the Corporation, to indemnify any other person made a party to any action, suit or proceeding who the Corporation may indemnify under the Delaware General Corporation Law.

SECTION 6. Insurance Indemnification. The Corporation shall have the power to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the Corporation against any liability asserted against or incurred by such person in such capacity or arising out of that person’s status as such, whether or not the Corporation would have the power to indemnify that person against such liability under the provisions of this Article XI.

SECTION 7. Indemnity Agreements. The Corporation is authorized to enter into a contract with any director, officer, employee or agent of the Corporation, or any person who is or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, including employee benefit plans, or any person who was a director, officer, employee or agent of a corporation which was a predecessor corporation of the Corporation or of another enterprise at the request of such predecessor corporation, providing for indemnification rights equivalent to or, if the Board of Directors so determines and to the extent permitted by applicable law, greater than, those provided for in this Article IX.

ARTICLE XII

Amendments

The Board of Directors shall have the power to adopt, amend or repeal these Bylaws. Bylaws adopted by the Board of Directors may be repealed or changed, and new Bylaws made, by the stockholders, and the stockholders may prescribe that any Bylaw made by them shall not be altered, amended or repealed by the Board of Directors.

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