How to bid on 155mm Modular Artillery for Combat Effectiveness (MACE) for DEPT of Defense

What the agency is buying

The Department of Defense is seeking proposals for 155mm modular artillery. This is for the Modular Artillery for Combat Effectiveness (MACE) prototype project. This opportunity is for businesses that can supply advanced artillery systems to support combat effectiveness.

Key dates and deadlines

This solicitation was published on August 31, 2026. The deadline for submitting your proposal is October 30, 2026, at 3:00 PM ET. This deadline was extended from an earlier date of September 30, 2026, to allow vendors more time to prepare their responses.

It is important to submit your proposal by the exact deadline. Late submissions are generally not accepted.

Who this opportunity suits

This opportunity is suitable for firms specializing in defense manufacturing, particularly those with expertise in artillery systems and military hardware. Companies capable of developing and producing 155mm modular artillery will find this relevant. The project falls under the security category.

How to respond

To access the full details and respond to this Request for Proposal (RFP), you need to refer to the Prototype Project Opportunity Notice (PPON) and its attachments. Specific documents, including Attachment 8 (Purchase Description) and Attachment 9 (Packing and Unitization Drawings), will be provided upon request.

To receive these specific documents, you must first sign, complete, and submit Attachment 12 (Technical Data Request Questionnaire), Attachment 6 (Non-Disclosure and Non US Agreement), and Attachment 14 (DD2345 Military Critical Technical Data Agreement) for contracting approval. Refer to section 8 of the PPON for more information on this process.

Tips for preparing a competitive response

Given the nature of this prototype project, focus on demonstrating your firm's technical capabilities and innovative solutions for 155mm modular artillery. Ensure your proposal clearly addresses all technical clarifications mentioned in the solicitation.

Pay close attention to the updated terms and conditions, especially Supplement 5, Sub Section number 2, regarding the Outside Funding Contribution Schedule, which now covers FY 2027, FY 2028, and FY 2029. Thoroughly review all required forms, such as the Non-Disclosure and Technical Data Request documents, and submit them promptly to gain access to all necessary information.