U.S. Ordnance–Defense Systems and Manufacturing, often called USORD, is a firearms manufacturer in McCarran, Nevada, 20 minutes outside Reno. Since 1997,^[2] the Nevada corporation has designed, developed, and manufactured military small arms, machine guns, and replacement parts.

U.S. Ordnance specializes in producing versions of the mature, combat-proven Mk43/M60E4 and M2 machine guns, making and testing them according to U.S. military technical specifications and instructions. U.S. Ordnance is the only manufacturer of the Mk43 machine gun.^{[citation needed]}

The company's primary weapons are the M2HB, M2A2 (QCB), the Mk43/M60E4, the M60D Enhanced and the M16/M4/M203, all of which are sanctioned by NATO. U.S. Ordnance sells these to U.S. government agencies, including law enforcement and the military, and to federally approved foreign governments and militaries. It also provides training for its products.

M2 and M60 machine guns are in service in more than 47 countries.^{[citation needed]}

U.S. Ordnance’s new plant is a 68,000-square-foot (6,300 m²) facility for product research, development, manufacturing and testing. A U.S. government representative is on site to witness and verify specific procedures in the production and testing of the weapons, and ensure all the required standards are met.^{[citation needed]}

All the products that U.S. Ordnance develops are to NATO specifications.^{[citation needed]}

The company ensures that all of its Mk43 and M2 improvements are backwards-compatible and that its M2 spares and components interchange with those from Maremont Corp. and Saco Defense.^{[citation needed]}

U.S. Ordnance Research and Development personnel put the company’s weapons through drop testing and environmental testing like mud, ice, heat and water immersion to ensure they will continue to perform even in the harshest environments.^{[citation needed]}

U.S. Ordnance has CNC machining centers and screw machines,^[3] which are used to machine the various parts that make up each weapon. Other machinery includes high-capacity barrel production and Mil Standard plating equipment.^{[citation needed]}

The company also uses a magnetic particle inspection machine for detecting surface and subsurface irregularities in the metal of its weapons.^{[citation needed]}

In February 2006, much of the M60 production tooling (owned by the U.S. Army) was transferred from General Dynamics at Saco to U.S. Ordnance.^[4][5]

Some of the government contracts U.S. Ordnance has fulfilled include:

• Under contract, U.S. Ordnance supplied 15 M60E3 machine guns along with 15 spare barrels to the Philippines in June 2005 as an FMS sale.^[4]
• U.S. Ordnance fulfilled a purchase order from the U.S. Army in September 2007 for 173 M60D Enhanced machine guns along with spare parts. Provided as aid to the Philippines, they were delivered in 2008.^[6]
• Between November 2004 and May 2009, U.S. Ordnance fulfilled the following orders for foreign allies: 3,196 M60E4/MK 43 machine guns, 2,337 spare barrels, 341 conversion kits and 367 accessory kits.^[7]
• In September 2008, U.S. Ordnance received a contract from the U.S. Army for M2HB (859) M2HB machine guns, (859) spare barrels and (859) basic accessory kits. It fulfilled this FMS contract, whose end user was the Afghan National Army.^[8]
• In April 2009, U.S. Ordnance received a 5-year, indefinite-quantity contract from the U.S. Army for M60E4/Mk43 machine guns to support foreign military sales. The first three orders under this contract totaled 2,217 M60E4s, 1853 spare long barrels and 309 conversion kits, plus parts and accessories.^[7]The contract number is W52H0909D0135 and FMS customers can now order from this contract until 2014.^[6]
• On June 9, 2010 TACOM-RI contracted (50) each M60D Enhanced Machine Guns ^[9]
• In July 2009, U.S. Ordnance was awarded a one-time, 20 percent, small business set-aside, indefinite-delivery/indefinite-quantity (IDIQ) type contract with four ordering periods, under which orders will be placed for the M2 .50 caliber Flex machine gun, NSN: 1005-00-322-9715, Part Number: 8401485. The contract number is W52H0909D0249 and delivery order 0001 obligates the one-time, 20 percent small business set-aside guaranteed minimum quantity of (548) M2 machine guns. The grand total maximum ordering quantity over the four ordering periods against all awarded contracts is 40,000 each. Contract Expiration Date is August 31, 2012.^[10]
• In August 2009, U.S. Ordnance received a 4-year, indefinite-quantity contract from the U.S. Army for M2HB, M2A2 (QCB) and M48 machine guns to support foreign military sales. There have been four delivery orders under this contract totaling (475) M2HBs, (475) spare barrels and (475) basic accessories, (252) M2A2 quick change barrels, (80) M48 weapon systems, plus parts and OCONUS training. The end users were the Colombian Army, Colombian Navy, and the Iraq National Police. The contract number is W52H0909D0270, and FMS customers can now order from this contract until August 2012.^[11]