This M4 Profile Crowned Barrel Kit is complete and contains all parts forward of the Upper Receiver. 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 Kit includes Barrel, Barrel Extension with M4 Feed Ramps, Barrel Nut, Front Handguard Cap, A2 Standard Sight Base with Square Post & Sling Swivel, M4 Double Heat Shield Handguards, Delta Ring, Weld Spring, Snap Ring, and Gas Tube & Pin – all top quality parts made in the USA.
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