Exacting construction and rigorous durability are the standard for every weapon system that comes off the line at BCM. BCM Professional Grade Weaponry are hard use tools, built to perform in combat where unfailing performance is the only standard for men and machine.Features :"16" 410 Stainless Steel Medium Contour Barrel,USGI 5.56mm NATO Chrome Lined Bore and ChamberRifle Length Gas SystemM4 Feed Ramp Flat Top with Laser T-markingsBCM Gunfighter CompensatorBCM MCMR M-LOK HandguardBCM Furniture