BCM Barrel Stripped Standard 14.5 Mid-Length Gas, Enhanced Light Weight Fluted.

M4 Feed Ramp Barrel Extension (USGI)
USGI 1/7 Twist Rates
USGI 5.56 NATO Chambers
Mil-Spec 11595E - Barrel Steel (CMV)
Chrome Lined Bore and Chamber
Manganese Phosphate Barrel Finish
LIGHT WEIGHT Profile Barrels - Fluted
HPT (High Pressure Test) Barrels
MPI (Magnetic Particle Inspected) Barrels