Solicitation
155mm Modular Artillery for Combat Effectiveness (MACE)
Dept of Defense · Dept of the Army · Sol. W15QKN26R1C5R
Due in 22 days
AI summary Beta
Some details are in the notice's attachments, which this summary didn't read. Check the attachments on SAM.gov.
The Army (Picatinny, ACC-RI) is seeking prototype proposals for the 155mm Modular Artillery for Combat Effectiveness (MACE) through a Prototype Project Opportunity Notice (PPON). The notice text is only a list of amendments; the real requirements are in the PPON and attachments. Proposals are due October 30, 2026.
Watch out for
- Key documents restricted. You must complete export-control paperwork and wait for approval before you can see the purchase description and drawings, which eats into the time before October 30.
- Schedule changed repeatedly. Five amendments have moved the deadline and rewritten the schedule and CLIN structure, so the last-minute update could force rework.
to resolve the schedule discrepancies identified in the solicitation
- Ammunition prototype work. Needs ammunition manufacturing capability (NAICS 332993) and likely facility and security requirements not described in this text.
Read from the notice text only.
Full brief
What they want
- Submit a proposal for the 155mm MACE prototype project as described in the PPON
- Prepare Technical, Schedule (IMS) and Cost/Price volumes
- Use the timelines, relative durations and CLIN structures in the amended Statement of Work and CLIN Matrix (Amendment 0005)
- Contract type
- Prototype project agreement under a Prototype Project Opportunity Notice (PPON), not a standard FAR contract
- Period of performance
- Schedule milestones are set as months after agreement award; exact duration is in the updated SOW and CLIN Matrix attachments
- Offers due
- 2026-10-30T15:00:00-04:00 (October 30, 2026, 3:00 PM Eastern)
What to include when you submit
- Use only the updated attachments 23, 24, 25 and the updated PPON from Amendment 0005 as the basis for the proposal
- Include Technical, Schedule (IMS) and Cost/Price volumes
- To get the Purchase Description and Packing and Unitization Drawings, sign and submit Attachments 12, 6 and 14 first
You must have
- Must submit a Technical Data Request Questionnaire, a Non-Disclosure and Non US Agreement and a DD2345 Military Critical Technical Data Agreement to get restricted documents
will be provided to Offerors upon request once the Offeror signs, completes and submits the following documents for contracting approval
- Technical data package (TDP) access requires approval through SAM.gov
Not in the notice text
- Evaluation method and factors (in the PPON)
- Submission method and format
- Estimated value or funding
- Quantities, the Purchase Description and technical requirements (restricted attachments)
- Place of performance
- Any eligibility rules for the prototype agreement (in the PPON)
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Key facts
- Response due
- Oct 30, 2026, 7:00 PM UTC
- Posted
- Oct 6, 2026
- Notice type
- Solicitation
- Solicitation
- W15QKN26R1C5R
- Agency
- Dept of Defense · Dept of the Army
- Office
- W6QK ACC-Ri-Picatinny
- NAICS
- 332993
- Product/service code
- 1320
- Business type
- Weapons & ammunition
- Contracting contact
- Mary O'CONNELLmary.p.oconnell3.civ@army.mil
- Versions
- 10 (amended since first posted)
Full notice text from SAM.gov
Amendment 0005 - The purpose of this Amendment 0005 is to resolve the schedule discrepancies identified in the solicitation and provide the definitive baseline for all proposal submissions. Specifically, this amendment: The Government acknowledges the discrepancy between the delivery dates specified in the original Statement of Work (SOW) (Attachment 7) and the performance periods specified in the original MACE CLIN Matrix (Attachment 4), which was caused by the proposal submission extension in Amendment 0001. This Amendment 0005 provides a revised and corrected Statement of Work (SOW) and CLIN Matrix. All schedule milestones have been aligned to relative durations (Months After Agreement Award) to ensure a stable, executable performance period. Amendment 0005 also adds the Updated MACE Questions Addressed plus an updated PPON which lists the amended attachments. The following updated attachments are formally incorporated into the solicitation and replace all previous versions: Attachment 25 Updated Statement of Work (SOW) (Dated 10-6) Attachment 24 Updated MACE CLIN Matrix (Dated 10 6) Attachment 23 Updated MACE Questions Addressed (Dated 10-5) PPON Document MACE Extended Updated Attachments W15QKN 26R1C5R (Dated 10-6) All Offerors shall use the timelines, relative durations, and CLIN structures specified within these amended documents (updated attachments October 5 and 6, 2026) as the sole, definitive basis for their proposal submissions, including their Technical, Schedule (IMS), and Cost/Price volumes. *********************End of Amendment 0005**************************************************************Amendment 0004 - The purpose of amendment 0004 is to update the Question and Answer document from Attachment 15 - Updated MACE Offeror Questions Addressed 9-17 to Attachment 16 - Updated MACE Offeror Questions Addressed 9-24. Amendment 0004 also serves as notification that 6 additional TDP documents have been uploaded to SAM.gov. Vendors who have already been approved for the TDP can access the documents immediately, and those not previously approved may request access through SAM. **********************************************End of Amendment 0004*************************************************Amendment 0003 - The purpose of this amendment 0003 is to add Attachment 15 - Updated MACE Offeror Questions Addressed 9-17 **************End of Amendment 0003**********************************************************Amendment 0002 - The purpose of this amendment 0002 is to add Attachment 15 - MACE Offeror Questions Addressed. *********************End of Amendment 0002 Narrative ******************************************************************************************************************************************************** Amendment 0001 - The purpose of this amendment 0001 is to extend the solicitation response deadline from September 30, 2026 to October 30, 2026. This extension is granted to ensure all potential offerors have sufficient time to conduct thorough analyses, address recent technical clarifications, and submit comprehensive, high-quality proposals which deliver the best value to the Government. As a result of the extension, the Prototype Project Opportunity Notice (PPON) has been revised to reflect the new response deadline. Attachment 1 - Terms and Conditions has been updated in Supplement 5, Sub Section number 2 Outside Funding Contribution Schedule to change the Basic Agreement Years from FY 2026, FY 2027, FY 2028 to FY 2027, FY 2028, FY 2029. ****End of Amendment 0001 Narrative****************************************************************************************************************************** 155mm Modular Artillery for Combat Effectiveness (MACE) - Please refer to Prototype Project Opportunity Notice (PPON) and attachments. Please note: Attachment 8 - Purchase Description and Attachment 9 - Packing and Unitization Drawings will be provided to Offerors upon request once the Offeror signs, completes and submits the following documents for contracting approval: Attachment 12 Technical Data Request Questionnaire; Attachment 6 Non-Disclosure and Non US Agreement plus Attachment 14 DD2345 Military Critical Technical Data Agreement. Please refer to section 8 of the PPON for further information.