Colt Mfg LE6920OEM1 M4 Carbine 5.56 NATO 30+1 16.10″ Barrel w/Muzzle Brake, Black Metal Finish, A2 Front Sight, Black Polymer Grip
Global Ordnance LLC 197892003223 Monolithic 5.56 NATO 16″ Barrel, M-LOK Handguard, Modular Black Stock, Black Polymer Grip
