Brownells 75th Anniversary - A Shooting Heritage

Carbine variants of the Lightweight BRN-10 Barrels

The Brownells AR 308 Carbine Barrel enables you to give your DPMS pattern 308 a lighter, more compact barrel for faster handling in close quarters. You can swap out your rifle's existing barrel, build a new AR-308 carbine from scratch, OR just install it on a modern AR-308 upper to get a lightweight, maneuverable carbine that packs .308 a punch.

Each AR 308 Carbine Barrel comes with the same gas block / front sight base as our BRN-10™ rifles. It's based on the original Sudanese-type front sight found on AR-10® rifles produced by the Dutch company Artillerie Inrichtingen under license from Armalite®. The good news is your barrel arrives with the front sight base installed, along with the barrel nut, handguard cap, and side-mounted sling swivel, making the barrel swap process easy and fast.

The AR 308 Carbine Barrel comes with AR-308 standard 5/8""-24 tpi muzzle threads that'll accept just about any readily available .30 caliber flash hider, compensator, or muzzle brake.

  • Available in 18", and 20” (rifle gas systems) lengths
  • Made of extra-hard 4150 carbon steel
  • .308 Winchester chamber
  • 1-10" rifling
  • Front sight base / gas block, barrel nut, handguard cap & sling swivel installed
  • Barrel nut fits standard AR-15 wrench
  • Tough anti-corrosion Nitride finish with a Parkerized topcoat (excellent match to Brownells Retro Rifle™ receivers)
  • Produced for Brownells by Faxon Firearms

Big Book Catalog, Issue:73, Page:014


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Cartridge: 308 Winchester

Length: 20"

Barrel Weight: 3.14 lbs

Contour: Lightweight

Finish: Phosphate

Gas System Length: Rifle, ...

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Discontinued by Brownells

Product has been discontinued and no longer available.

Discontinued by Brownells

Product has been discontinued and no longer available.