14.5" pre-ban M-4A1 SOCOM profile with a 1x7 twist, 4150 11595E Steel with Chrome Lining. These are the same heavy profile as the current issue with the M203 flats. This short M4 type Barrel - 14.5” in length - features a permanently pinned and welded Extended A2 "Birdcage” Flash Hider. This combination yields an overall length of 16 3/8” for legal use on standard semi-auto rifles. It has the M4 turning for mounting a grenade launcher, and the barrel extension has the M4 style feed ramps. Also included are the Barrel Nut, Front Handguard Cap, Front Sight Base (Stripped) and Bayonet Lug. This high quality barrel is machined from 4150 Chrome Moly Vanadium 11595E Steel, chrome lined in both Bore and Chamber, and Black Manganese Phosphate finished for protection against rust and corrosion. Button rifled 1 turn in 7" (RHT) to stabilize
bullets from 50 to 77 grains.