The Wilson Combat 8-inch 300 Blackout barrel is a match grade AR-15 barrel in the company’s compact Tactical profile, machined from 416R stainless steel (brand part no. TR300SBRPG8RT7). Wilson Combat hand-polishes the bore and feed ramps, cuts a precision muzzle crown, and optimizes the chamber and gas port for reliability. The 1:7 button-rifled bore is set up for heavy subsonic 300 Blackout loads fired suppressed, and it works with supersonic ammunition when you want more range. A medium taper profile helps it hold up to sustained strings of fire without getting heavy. It is a strong foundation for a compact 300 Blackout upper build.

Key Specifications

• Chamber is 300 Blackout, the .30 caliber AR cartridge designed for suppressed use.
• Barrel length is 8 inches, Wilson Combat’s most compact AR-15 barrel.
• Material is 416R stainless steel, American-made rifle-rated steel.
• Rifling is 1:7 six-groove, button rifled, a fast twist that stabilizes heavy subsonic bullets.
• The gas system is pistol length, matched to the short barrel.
• The gas block seat is .750 inch, dimpled for a set screw, to fit Wilson Combat’s matching low-profile gas block (sold separately).
• Muzzle threads are 5/8×24, the standard .30 caliber pattern for brakes, flash hiders and suppressor mounts.
• Feed ramps are M4 style, hand-polished for smooth feeding.
• The finish is matte bead-blasted stainless, a low-glare surface.
• Weight is 17 ounces, as Wilson Combat lists for this barrel.

Frequently Asked Questions

What gas block and gas tube does it need? It takes a .750-inch gas block on a dimpled seat with a pistol-length gas tube. Wilson Combat lists its TR-LPGB gas block and TR-GTP gas tube as the matching parts, sold separately.

Will it handle subsonic 300 Blackout? Yes. Wilson Combat says the 1:7 twist is optimized for heavy-bullet subsonic loads fired suppressed and also works well with supersonic ammunition.

What muzzle devices fit it? The muzzle is threaded 5/8×24, the common .30 caliber thread pitch.

Buy the Wilson Combat 8-Inch 300 Blackout Match Grade Barrel, Stainless

Short 300 Blackout barrels live or die on gas port sizing, and this one comes from a shop that builds the same barrel into its own complete rifles. Add it to your build from our AR barrels selection and it ships fast and direct from our Lubbock, Texas gun shop.