16" Mid length Government Replacement barrel for mid length gas system, 5.56mm NATO 1:7 twist, 41V50,
chromed bore and chamber, button rifled, thermo stress releived, precision air
gauged, gas port, assembled with M4 extension with M4 feed ramps, muzzle thread
1/2 x 28. Limited quantity - while supply lasts. Barrel is not pinned for front
site. Weighs 1.9 lbs.