Thompson Center Prohunter Rifle Barrel Features The Thompson Center Prohunter barrel is chambered in 8.6 Blackout a cartridge built around heavy subsonic-capable projectiles that benefit from this barrel s fast 1:3 twist rate. That twist rate is specifically matched to stabilize the longer heavier bullets common to this chambering which a standard sporting twist rate would fail to spin-stabilize properly. A stainless steel construction resists corrosion and wear keeping the barrel s bore and exterior protected through repeated use in the field or at the range. At 16 in length this barrel keeps the rifle s overall length manageable while still delivering sufficient velocity from the 8.6 Blackout cartridge. Threaded 11/16x24 this Prohunter barrel is ready to accept a suppressor or other muzzle device without additional machining. As a drop-in replacement for the Thompson Center Pro Hunter platform it gives existing owners an affordable way to add a new caliber to their rifle without purchasing an entirely new gun. This flexibility is one of the core advantages of the Pro Hunter s interchangeable barrel system. For Pro Hunter owners looking to try the 8.6 Blackout cartridge this stainless steel threaded barrel is a straightforward upgrade path. Thompson Center Prohunter Rifle Barrel Specifications Manufacturer: Thompson Center Model: Prohunter Rifle Barrel Type: Rifle Barrel Caliber: 8.6 Blackout Barrel Length: 16 Finish: Stainless Steel Twist Rate: 1:3 Thread Pattern: 11/16x24 Compatible Hosts: Thompson/Center Pro Hunter Weight: 3.1 lbs Available At: GrabAGun