300BLK with pistol gas system for optimum reliability with super or subsonic ammo. Faxon Firearms ba..
Barrel Material: 4150 Certified Gun Barrel Quality SteelBarrel Type: Button Rifled Barrel Calib..
Out Of Stock
16.1″M4 Profile4140 Chrome MolySalt Bath Nitride Finish Inside and Out1:7 Twist5.56×45 NATO ChamberT..