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A Factory-Made M4CQB Barrel from Colt

Whether you've got an AR-style pistol or a short-barreled rifle that needs a new barrel or a brand-new build that demands a high-quality barrel, Colt's M4CQB OEM barrel is available as a dedicated add-on or replacement component straight from the same line that produces barrels for Colt's factory guns.

Each Colt AR-15 M4CQB Barrel features six-groove rifling with a 1:7-inch rate of twist. The barrels include M4-style feed ramps and have a chrome lining that prevents corrosion. Each barrel is set up for a carbine-length gas system and features 1/2""-28 TPI threading at the muzzle.

Colt's M4CQB Barrels are available in 10.3-inch lengths and can be had as a stripped barrel, complete with barrel extension, or as an assembly that includes a barrel nut, front-sight tower, post and sling swivel.

COLT - AR-15 M4CQB 5.56 BARREL 10.3IN

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Backorder, See Associate
Out of Stock

Cartridge: 5.56 mm NATO

Length: 10.3"

Finish: Black

Gas System Length: Carbine

Muzzle Threads: 1/2-28

Twist: 1-7

Backorder, See Associate
Out of Stock

Cartridge: 5.56 mm NATO

Length: 10.3"

Finish: Black

Gas System Length: Carbine

Muzzle Threads: 1/2-28

Twist: 1-7