Disclaimer: This barrel is only reliable with 5.56 NATO ammo. Do "NOT" use 223 Wylde, It will result in under gassing and reliability issues. Features:Manufacture: Bear Creek Arsenal CNC Precision Machined 4150 Heat Treated SteelDurable Black Nitride FinishGas System: Carbine5.56 NAT..
.750" gas block diameter
Mid Length gas system with a 0.07 gas hole diameter
1/2"x28 Thread Pitch
Black Nitride finish
4150 Heat Treated Moly Vanadium
Made in U.S.A.
Features:Manufacture: Bear Creek ArsenalLength: 18 Inch Chambered in .223 Wylde Can shoot .223/5.561:8 Twist rate .750" Gas block diameterMid Length gas system 1/2x28" thread pitch 4150 Chrome Moly Vanadium Finish: Black Nitride Spiral FlutesMade In U.S.A..