Windham Weaponry 16in M4 Crowned Barrel Sub-Assembly with MIL-STD-1913 Railed Gas Block - .223/5.56mm

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For those builders who already have barrel parts, we offer this M4 Profile Crowned Barrel Sub-Assembly with MIL-STD-1913 Railed Gas Block. The highly accurate 4150 Chrome Moly Vanadium steel barrel is chrome lined and rifled 1 x 9″ Right Hand twist. The muzzle is finished with a plain crown to comply with legal restrictions in States where threaded muzzles and flash hiders are prohibited – the bayonet lug has been machined off the MIL- STD-1913 Railed Gas Block. The Assembly includes Barrel, Barrel Extension with M4 Feed Ramps, Barrel Nut, Front Handguard Cap, MIL-STD-1913 Railed Gas Block with Sling Swivel. All top quality Windham Weaponry parts – made in the USA.

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