.223 Rem | 5.56 NATO

Colt

Colt CR6920-EPR Enhanced Patrol Rifle in Black with 16.1-Inch Barrel

Colt

Colt LE6920-OEM1 5.56 NATO AR-15 Rifle with 16.1-Inch Chrome-Lined Barrel

Colt

Colt M4 Carbine Model CR6920MPS-B with Magpul MOE SL Stock and 16.1-Inch Barrel

Colt

Colt LE6920-OEM2 5.56 NATO AR-15 Rifle with 16.1-Inch Barrel and Flat Top Sights

Colt

Colt M4 Carbine Magpul Series Model CR6920MPS-FDE in Black with 16.1-inch Barrel

Colt

Colt Monolithic Carbine 5.56 NATO, 16.1 Inch Barrel, 30 Rounds - Black

Colt

Colt AR15A4 Semi-Automatic Rifle with 20-Inch Barrel and 30-Round Capacity

Colt

COLT LE6920-R Trooper M4 5.56 NATO 16.1-inch Barrel with 30-Round Magazine, Black Finish

Colt

Colt Midlength Carbine AR-15 Rifle in 223 Remington, 16.1 Inch Barrel, Black

Colt

Colt CM556-16-M5S CM5 Sentry Rifle in 5.56 NATO with 16.1-inch Barrel and Collapsible Stock

Colt

Colt LE6920MPS-FDE AR-15 Rifle with Magpul Accessories, 16.1" Barrel, Flat Dark Earth

Colt

Colt M4 Carbine with Magpul SL Stock and 30-Round Magazine - Model LE6920MPS-B