The Colt LE6920 AR-15 carbine in 5.56x45mm NATO is the OEM1 configuration, a 16.1-inch carbine sold without furniture so you can build it your way (brand part no. LE6920-OEM1). Colt supplies the chrome-lined barrel, forged receivers and carbine-length gas system, then leaves the handguard off for your choice of rail or handguard. The flat-top receiver accepts optics, and the A2 front sight base is ready for a rear sight or backup. It is a solid starting point for a customized rifle from the maker of the M4.

Key Specifications

• The chambering is 5.56x45mm NATO, the military cartridge the Colt carbine was built for.
• The barrel is 16.1 inches, made from Colt-spec CrMoV steel with a chrome-lined bore.
• Rifling is a 1:7 right-hand twist with six grooves, a rate that stabilizes common 5.56 loads.
• The operating system is carbine-length direct impingement, the standard Colt M4 gas system.
• The front sight is an A2 front sight base with an adjustable fixed front sight post.
• The handguard is not included, so the rifle is ready for the rail system or handguard you choose.
• The receiver is forged 7075-T6 aluminum with a flat-top Picatinny rail and a matte black hard coat anodize finish.
• The muzzle device is an A2 muzzle device, the standard Colt carbine style.
• The rifle weighs about 5.4 pounds as supplied, light enough to build into a lean carbine.
• Overall length is 32 inches in this configuration.

Frequently Asked Questions

What does OEM1 mean on this Colt? It is Colt’s configuration without furniture. The handguard is not included, so you can fit your own.

Does it come with a handguard? No. The OEM1 is supplied without a handguard, so you choose the handguard or rail system you want.

What caliber is it? It is chambered in 5.56x45mm NATO.

Buy the Colt LE6920 AR-15 Carbine in 5.56x45mm NATO

The OEM1 gives you Colt’s receiver, barrel and bolt group without anyone else’s idea of furniture. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR-15 rifles while you are here.