U.S. Army’s top ammo supplier lands another big contract

The U.S. Army has awarded Olin Winchester a contract worth up to roughly $788.4 million for 5.56mm, 7.62mm and .50-caliber ammunition. The five-year, indefinite-delivery/indefinite-quantity contract combines firm-fixed-price and price-adjustment terms, runs through September 10, 2031, and was awarded without competition after only one bid was submitted.

Army Contracting Command at Rock Island Arsenal, Illinois, is managing the deal. Specific work locations and funding will be set order by order rather than fixed at signing, a common structure for ammunition contracts of this size.

In an era when so much Army procurement news involves drones, loitering munitions and counter-UAS systems, this contract is a reminder that the service still needs a basic supply of bullets. Rifles, machine guns and sniper systems in Army and Marine Corps units all depend on 5.56mm, 7.62mm and .50-caliber rounds, and none of that demand disappears as unmanned systems take on a larger share of the fight.

The award builds on Olin Winchester’s existing role as the backbone of the Army’s small-caliber ammunition supply. The company has operated and managed the Army’s Lake City Army Ammunition Plant in Independence, Missouri, since October 2020, a facility with the capacity to produce up to 1.4 billion rounds a year across the calibers this contract covers. Olin Winchester also runs its own production line in Oxford, Mississippi, which has handled past Army orders for the same three calibers.

That production capacity came under real strain earlier in the decade. Washington’s military aid to Ukraine included more than 200 million rounds of small arms ammunition drawn from U.S. stockpiles between 2021 and 2023, most of it 5.56mm and 7.62mm, pushing the Army to keep Lake City running at a high tempo to replace what had been sent overseas. Contracts like this one are part of how the Army keeps that pipeline funded years in advance rather than reordering caliber by caliber.

The ammunition covered by this contract is separate from the Army’s newer 6.8x51mm Common Cartridge, developed for the Next Generation Squad Weapons program and currently sole-sourced through Sig Sauer. That round is meant to eventually replace 5.56mm in close-combat units, but the transition is gradual, and the vast majority of the Army and Marine Corps still fire the legacy calibers this contract will keep flowing.

The Winchester name traces back to 1866, when Oliver Winchester founded the Winchester Repeating Arms Company in New Haven, Connecticut. Its Model 1873 rifle became known as “the gun that won the West,” selling more than 700,000 units. Winchester began supplying the U.S. military during World War I, and during World War II the company built more than half a million M1 Garand rifles and over 800,000 of the six million M1 carbines produced for Allied forces. Olin Corporation took over the Winchester brand in the 1930s, and the combined Olin Winchester ammunition business has supplied the U.S. military for decades since. When it took over Lake City’s operations in 2020, the company described itself as the world’s largest small-caliber ammunition manufacturer, a claim that has only grown harder to dispute given its current footprint across Army contracts.