8.5” Pistol profile 300 Blackout barrel with threaded muzzle
- 416R Stainless steel
- 18 oz including extension
- 6-groove / 1:7” twist button rifling
- 5/8-24 muzzle thread
- Pistol length gas system
- M4 feed-ramps
Build it into an Upper Assembly HERE.
Click HERE to see additional information about our Bison Armory AR-15 barrels on our “Product Information” page. If you are unfamiliar with AR-15 barrel maintenance and new barrel break-in, we encourage you to view our "Maintenance" page HERE for some tips on getting the most out of your firearm.
Optional Shim Set: The best 5$ you will ever spend! These stainless steel shims guarantee you perfect and hassle free barrel nut / gas tube alignment within the correct torque specs every time. For more information on our shims and a step-by-step guide to their use check out our video HERE.
Optional Bolt: We check EVERY bolt / barrel for proper headspace before they leave our shop. For more information on our bolts click HERE.
Optional Bolt Carrier: Carriers ship assembled and include the gas key and firing, retaining and cam pins. If you purchase a bolt and a carrier, we will assemble the complete carrier group for you before shipping. For more information on our carriers click HERE.
Shipping: In stock barrels (together with any additional parts ordered) usually ship within 10 - 15 business days from the date of purchase. Custom coating / bead-blasting and gas block pinning may delay shipping by a few days. We ship via UPS to addresses within the contiguous United States, and USPS Priority to Alaska and Hawaii.
Billing: Your credit card is charged for the full amount of your purchase at the time you place your order, not when your order ships.