.223/5.56

AR-15 5.56 NATO 16" Inch Rifle Barrel Mid Gas System 1:7 -Parkerized

AR-15 5.56 NATO 16" Carbine Gas System M4 Profile Rifle Barrel 1:8 -Black Nitride

AR-15 5.56 NATO 7.5" Inch Pistol Barrel 1:8 -Black Nitride

AR-15 5.56 NATO Pistol 7.5" Inch Barrel 1:7 -Stainless

AR-15 5.56 NATO 10" Inch Pistol Barrel 1:7 - Parkerized

AR-15 5.56 NATO 16" Carbine Gas System Stainless 416R Steel Barrel 1:8 Twist

AR-15 .223/5.56 NATO 5" Micro Pistol Barrel 1:5 Twist & Micro Gas Tube

AR-15 .223 Wylde 14.5" Inch Rifle Barrel Carbine Gas System 1:8 -Nitride

AR-15 .223 Wylde 18" Inch Mid Length Gas System 1:7 Twist - Stainless Steel

AR-15 5.56 NATO 16" Inch 1:8 Twist State Compliant Rifle Barrel Non Threaded-Nitride