Length: 16".300 BLK (AAC Blackout)1:8 Twist.750" gas block diameterPistol gas system with a 0.125" gas hole diameter5/8"x24 Thread Pitch4140 gun quality steel, heat treated to RC 28-32 hardness, stress relieved.Black Nitride Finish Made in the U.S.A.Fits: AR-15..
.300 BLK (AAC Blackout)1:7 Twist.750” gas
length with enhanced gas port hole diameter.5/8”X24
Tread Pitch4140 gun
quality steel, heat treaded to RC 28-32 hardness, stress relievedParkerized
barrel is made to precise specifications and designed t..
in the U.S chambered in the 300 BLK (AAC Blackout) rifle cartridgeRuns the American 30 caliber slug with an
enhanced pistol gas system port. This barrel carries
the same tread pitch as the AR-10 barrels 5/8x24 to add a muzzle device.Length: 7.5”Chambered: .300 BLK (AAC