Ask the Community

Hi Jerome, this is chambered & rated for 5.56 NATO, so it will safely shoot both 5.56 NATO and .223 REM, or simply 5.56 & .223 Stay safe & have a great day!

Hi Jerome and welcome. The barrel is stamped 5.56NATO so it will shoot 5.56 and .223 with nary an issue. Cheers, stay safe and enjoy! Specifications and Features: 5.56 NATO (accepts .223 Remington) 18" 4140 chrome-moly steel Cold Hammer Forged Barrel 1:8" Twist 5 Groove Rifling Muzzle Threaded 1/2-28 TPI