Olin Winchester LLC

Olin Winchester LLC, a division of Olin Corporation, manufactures small caliber and larger-format ammunition and operates the Lake City Army Ammunition Plant in Independence, Missouri as the prime contractor on the Department of the Army's long-term ammunition supply indefinite delivery contract, with $11.65 billion in combined potential value across 70 recent prime and subcontractor awards. Olin Winchester competes exclusively in full-and-open procurement with no set-aside designations across its prime footprint.

The company's federal capability portfolio centers on small arms and medium-caliber ammunition manufacturing in calibers ranging from .22 through .50, production of specialty munitions including M62A1 tracers, 20mm multipurpose tracer ammunition, and armor-piercing discarding sabot rounds, facility operations and infrastructure at Lake City Army Ammunition Plant, and construction of the Next Generation Squad Weapon (NGSW) Manufacturing Facility at the plant. Representative prime contracts include a $505.79 million delivery order for FY25 production orders of small caliber ammunition issued by the Army's Program Executive Office for Ammunition on September 17, 2025; a $598.6 million firm fixed-price delivery order for NGSW facility construction issued by the Department of the Army on March 5, 2024; and a $425.4 million delivery order for FY24 small caliber production issued by PEO Ammunition on June 28, 2024. A $60.36 million cost-plus-fixed-fee delivery order awarded November 19, 2025 covers initial equipping effort and updates to statement of work and contract data requirements for facility modernization work through May 2029.

The Department of the Army dominates Olin Winchester's customer base—specifically the Program Executive Office for Ammunition within Army Acquisition Support Center—which accounts for 60 awards valued at $10.89 billion (93% of all combined potential value) and the Department of the Army more broadly with 9 awards valued at $763.4 million. A single Department of Justice award for $10,000 rounds out the identified customer set, representing a highly concentrated prime footprint. Recent activity accelerated sharply in 2025 with 34 awards, up from 7 in 2023 and 2 in 2024, though activity dropped to 3 awards in 2026 year to date. Eight awards valued at $1.85 billion reach ultimate completion within the next twenty-four months, creating recompete exposure in ammunition production and facility construction work.

Olin Winchester operates as a subcontractor on ammunition component procurement through two primary defense primes. Northrop Grumman Systems Corporation engages Olin Winchester across 37 subcontracts for small arms ammunition manufacturing and metal stamping work, including 20mm M55A2 target-practice cartridges, 20mm M940 multipurpose tracer-self-destruct ammunition, MK244 armor-piercing discarding sabot rounds, 30mm PGU-13D/B high-explosive incendiary linked cartridges, and PGU-28 semi-armor-piercing high-explosive incendiary ammunition. General Dynamics Ordnance & Tactical Systems engages Olin Winchester on 11 subcontracts for 20mm ammunition components, including PGU-27 and PGU-30 cartridges and primers. These subcontracts collectively span ammunition manufacturing and specialized metal component fabrication.

Olin Winchester sits on five long-term indefinite delivery contracts, all with the Department of the Army. The dominant vehicles are Indefinite Delivery Contract W52P1J19D0085 with 20 task orders valued at $3.28 billion combined potential value and Indefinite Delivery Contract W519TC24D0007 supporting 21 task orders. Contracts W52P1J18D0093 and W52P1J18D0092 respectively support 13 and 8 task orders, and Indefinite Delivery Contract W519TC24D0009 carries 4 task orders. Award concentration by NAICS reflects the manufacturing footprint: 47 awards fall under Ammunition (except Small Arms) Manufacturing and 22 under Small Arms Ammunition Manufacturing. The company obligated $4.35 billion (37% of combined potential value) as of the reporting date, indicating active production and facility work across the portfolio.