Brownells Military Barrels M16 A1 5.56 20'''' Rifle Barrel
The Brownells M16A1 5.56 Barrel is closely matched to the barrels found on late model M16A1 rifles. Perfect for reproduction or "retro" builds, this barrel has the same lightweight 20" profile as the originals. Chrome lined bore and chamber complement a 1-12 twist, the twist found on GI barrels. Barrel is magnetic particle inspected and proof fired, just like the originals. Gas block diameter is .625", and has a pinned front sight base. Barrel includes barrel nut and handguard cap. Muzzle is threaded 1/2-28, and is ready for installation of a classic flash hider. Gas system length is for rifle gas tubes. Barrel extension does not have M4 feed ramps. Barrel is Mfg: Brownells Military Barrels SPECS: Fits - AR-15/M16 rifles. Finish - Matte black phosphate, chrome lined. Profile - A1 Lightweight. Muzzle threads - 1/2-28. Chamber - 5.56x45mm NATO. Testing - Magnetic Particle & Proof Fired. Slip Ring - Flat. Front Sight Base - Standard (not F-marked).