155mm Modular Artillery for Combat Effectiveness (MACE)
Open — responses due 30 Nov 2026 (16 days left) · Unrestricted (full and open) · Department of the Army, DoD · NAICS 332993 · Solicitation W15QKN26R1C5R
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Description
Amendment 0009 - The purpose of this Amendment 0009 is to incorporate the updated questions and answers attachment, formally revise the proposal submission portal instructions in the Prototype Project Opportunity Notice (PPON) and to add Attachment 34. Specifically, this amendment: Formally Incorporates Updated Attachments and a new attachment: The following attachments are incorporated into the solicitation and replace all previous versions: Attachment 33 Updated MACE Questions Addressed (Dated 11-5), incorporating Questions #24 through #31 (including key clarifications regarding propellant GFE, NRE milestone formatting, and payload canister compatibility). Please note Attachment 33 has been uploaded as Controlled attachment. Attachment 34 12961016 Rotating Cover Band has been uploaded as Controlled attachment in response to question #28. PPON Document: PPON MACE EXTENDED November 30 W15QKN-26-R-1C5R Dated 11-5) has been revised to incorporate the updated attachment list in Section 11. Amends the PPON Submission instructions: The PPON Document: PPON MACE EXTENDED November 30 W15QKN-26-R-1C5R Dated11-5) has been revised in Section 3.1.13 to formally correct the submission portal from SAM.gov to Procurement Integrated Enterprise Environment (PIEE) Proposal Manager Module: Revised Text: 3.1.13 All proposal submissions shall be submitted electronically through the Procurement Integrated Enterprise Environment (PIEE) Proposal Manager Module (https://piee.eb.mil) .The direct solicitation link may be accessed via the active solicitation notice on SAM.gov. Instruction to Offerors: All Offerors shall use the timelines, relative durations, and CLIN structures specified within these amended attachments (dated November 5, 2026) as the sole, definitive basis for their proposal submissions, including their Technical, Schedule (IMS), and Cost/Price volumes. **************************************************************************************************************************************End of Narrative 0009***********************************************************************************************************************************************************************************************************************************************Amendment 0008 - The purpose of this Amendment 0008 is to incorporate updated questions and answers, and issue revised solicitation attachments. Specifically, this amendment: Formally Incorporates Updated Attachments: The following updated attachments are incorporated into the solicitation and replace all previous versions: Attachment 30 Updated MACE Offeror Questions Addressed (Dated 10-29), incorporating Questions #20 through #23.Attachment 31 Updated MACE CLIN Matrix (Dated 10-29), to clarify that the due dates for CLINs 0001A and 0014A represent the initiation of NRE activities, and that payment may be earned across interim milestones per Question #23.Attachment 32 Updated Statement of Work (SOW) (Dated 10-29), removing the administrative reference to Attachment B in SOW Section 8.0 per Question #21.Amends the PPON Text: The Prototype Project Opportunity Notice (PPON Document: PPON MACE EXTENDED November 30 W15QKN-26-R-1C5R Dated 10-29) has been revised in Section 3.3.3 (Volume III, Cost/Price) to add the following language to the third paragraph: to include the interim milestone allocations for Non-Recurring Engineering (NRE) under CLIN 0001A and CLIN 0014A. The attachment list has been updated to incorporate the revised attachments. Instruction to Offerors: All Offerors shall use the timelines, relative durations, and CLIN structures specified within these amended documents as the sole, definitive basis for their proposal submissions, including their Technical, Schedule (IMS), and Cost/Price volumes.*******************************************************************************************************************************************************************************************************************************************End of Narrative 008 *****************************************************************************************************************************************************************************************************************************************************Amendment 0007 - The purpose of this Amendment 0007 is to extend the solicitation response deadline, incorporate updated questions and answers, and issue revised solicitation attachments. Specifically, this amendment: Extends the Proposal Submission Deadline: The solicitation response deadline is extended from October 30, 2026, to 1500 EST on November 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 that deliver the best value to the Government. As a result, the Prototype Project Opportunity Notice (PPON Document: PPON MACE EXTENDED November 30 W15QKN26R1C5R Dated 10-27) has been revised to reflect the new response deadline and the updated attachments list. Incorporates Updated Attachments: The following updated attachments are formally incorporated into the solicitation and replace all previous versions: Attachment 27 Updated MACE Offeror Questions Addressed (Dated 10-26), incorporating Questions #17 through #19.Attachment 28 Updated Statement of Work (SOW) (Dated 10-26), reflecting the revised anticipated award date of March 29, 2027, while maintaining relative milestone durations. Attachment 29 Updated MACE CLIN Matrix (Dated 10-26), incorporating dedicated Non-Recurring Engineering (NRE) line items pursuant to Question #17. Instruction to Offerors: All Offerors shall use the timelines, relative durations, and CLIN structures specified within these amended documents as the sole, definitive basis for their proposal submissions, including their Technical, Schedule (IMS), and Cost/Price volumes. ************************************End of Narrative 0007 *****************************************************************************************************************************************************************************************************************************************************Amendment 0006 - The purpose of amendment 0006 is to update the Question and Answer document from Attachment 23 - Updated MACE Offeror Questions Addressed 10-5 to Attachment 26 - Updated MACE Offeror Questions Addressed 10-15. This amendment also updates the PPON (PPON MACE Extended Updated Attachments (Updated 10-15)) to add Attachment 26 to the attachment list.*********************End of Amendment 0006***********************************************************************************************************************************************************************************************************************************************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…
Version history
SAM.gov has posted 12 notices under solicitation W15QKN26R1C5R, oldest first.
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