It also has unlimited ammo, very little recoil, no scope sway, and packs one hell of a punch! The Barrett .50cal appears as one of the three semi- automatic sniper rifles in the CoD franchise. Barret 50 cal This Barrett .50cal has a variable zoom feature, meaning that the player can adjust the zoom to help with the assassination. Used to fire a bat-shaped hook attached to a high- tensile wire line in order to scale sheer surfaces and/or swing across gaps.