# 155mm Modular Artillery for Combat Effectiveness (MACE)

Notice c48733270d714ebc80fa14e8d089c9d0 (solicitation W15QKN26R1C5R) from DEPT OF DEFENSE, W6QK ACC-RI-PICATINNY, posted 2026-11-12, responses due 2026-11-30T20:00:00.000Z. Status: open.

| Field | Value |
| --- | --- |
| Notice ID | c48733270d714ebc80fa14e8d089c9d0 |
| Solicitation number | W15QKN26R1C5R |
| Type | Solicitation |
| Agency | DEPT OF DEFENSE |
| Sub-tier | DEPT OF THE ARMY |
| Office | W6QK ACC-RI-PICATINNY |
| Posted | 2026-11-12T20:47:47.000Z |
| Response deadline (UTC) | 2026-11-30T20:00:00.000Z |
| Set-aside | - |
| NAICS | 332993 |
| PSC | 1320 |
| Place of performance | - |
| Award | - |

## Description

Amendment 0010 - The purpose Amendment 0010 is to incorporate the updated questions and answers attachment and to formally revise the Prototype Project Opportunity Notice (PPON) Volume IV row of the Section 3.2.1 table. Specifically, this amendment:1. Formally Incorporates Updated Attachments: The following updated attachments are incorporated into the solicitation and replace all previous versions: Attachment 35 Updated MACE Offeror Questions Addressed (Dated 11-12), incorporating Questions #32 and #33. Please note Attachment 35 has been uploaded as a Controlled attachment. PPON Document MACE Extended November 30 W15QKN-26-R-1C5R (Dated 11-12), revised to incorporate the updated attachment list in Section 11 and Volume IV row of Section 3.2.1 table. 2. Establishes Proposal Submission Boundaries: This correction ensures that the SOW Section 6.0 Milestone Table remains strictly in Volume III (Cost/Price) as a priced document, while the Section 889 Certification is properly submitted within Volume IV (Miscellaneous Agreement Documentation).Instruction to Offerors: All Offerors shall use the timelines, relative durations, and CLIN structures specified within these amended attachments (dated November 12, 2026) as the sole, definitive basis for their proposal submissions, including their Technical, Schedule (IMS), and Cost/Price volumes..***********************************************************************************************************************************End of Narrative 0010************************************************************************************************************************************************************************************************************************************************************************************************************************************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 ***************************

## Sources

- View on SAM.gov: https://sam.gov/opp/c48733270d714ebc80fa14e8d089c9d0/view
- Data as of 2026-11-14. Source: https://sam.gov/data-services/Contract%20Opportunities/datagov

## Cite this

"155mm Modular Artillery for Combat Effectiveness (MACE), SAM.gov contract opportunity c48733270d714ebc80fa14e8d089c9d0." samgovapi.io, https://samgovapi.io/opportunity/c48733270d714ebc80fa14e8d089c9d0, data as of 2026-11-14. Primary record: https://sam.gov/opp/c48733270d714ebc80fa14e8d089c9d0/view

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