Ballistic Advantage 8.6 Blackout Threaded Rifle Barrel 16in Carbine 1-3 Twist 5/8x24 Threaded HBAR Contour 44oz Black QPQ. 6 Blackout Barrels are proof-fired and MPI-tested ensuring the best quality and accuracy. Specifications for Ballistic Advantage 8.6 Blackout Threaded Rifle Barrel: Manufacturer: Ballistic Advantage Fabric/Material: 416R Stainless Steel Caliber: 8.6mm Blackout Gas Block Journal Size-Diameter: .875 in Threads per Inch: 5/8x24 Barrel Twist Rate: 1-3 Barrel Material: 416R Stainless Steel Flutes: No Gun Make: AR Platform Gun Model: AR-10 Package Contents: Ballistic Advantage 8.6 Blackout Threaded Rifle Barrel What firearm models does the manufacturer say Ballistic Advantage 8.6 Blackout Threaded Rifle Barrel is compatible with? The manufacturer says that Ballistic Advantage 8.6 Blackout Threaded Rifle Barrel is compatible with AR-10Ballistic Advantage BABL86B003PQ: 8.6 Blackout Threaded Rifle Barrel 16in Carbine 1-3 Twist 5/8x24 Threaded HBAR Contour 44oz Black QPQ