Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Top-Quality Barrels Convert Your AR To A Cartridge With More Punch Than 5.56/.223

Fully chambered barrels let you convert a standard .223/5.56 AR to the harder-hitting 6.8 SPC cartridge or to .300 Blackout - ideal for shooting subsonic rounds through a suppressor. “Recon Tactical” profile provides strength and rigidity while remaining lightweight. Polished M4 style feed ramps aid in reliable feeding. 6.8 SPC offers four-groove button rifling with a 1-11" twist rate for excellent performance with bullet weights from 85 to 115 grains. Features a mid-length position for the pre-drilled gas port which is precisely sized for 6.8 SPC. Extra thickness under handguard resists heat warping. Requires 6.8 SPC bolt and magazines. Available in either 16" or 18" length. .300 AAC Blackout features six-groove, 1-8" twist, button rifling that works well for both subsonic and supersonic ammo. Drilled for carbine-length gas system with gas port correctly sized for .300 Blackout loads. Barrel works with standard .223/5.56 bolt and magazines. Available in 16" length only.

AR-15, Issue:09, Page:006
AR-15, Issue:09, Page:017
Big Book Catalog, Issue:66, Page:006
Big Book Catalog, Issue:66, Page:017

SPECS: 416 stainless steel, matte silver finish. 5⁄8"-24 tpi muzzle threads. .750” O.D. at gas port. 6.8 SPC: Mid-length gas system. 16” - 2 lbs (.9kg) wt. 18” - 2 lbs 4 oz. (1kg) wt. Accepts both 6.8mm SPC and higher pressure 6.8 SPC II ammo. .300 AAC Blackout: Carbine-length gas system. 16” (41cm) long. 2.1 lbs (.9kg) wt.


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Cartridge: 6.8 mm Remington SPC

Barrel Weight: 2.46 lbs

Contour: Medium

Finish: Stainless Steel

Length: 16

Twist: 1-11

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Cartridge: 300 AAC Blackout

Barrel Weight: 2.04 lbs

Contour: Carbine, Medium

Finish: Stainless Steel

Length: 16, ...

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