The Milsig GD50 is .50 cal that pistol uses an open blow forward system very similar to the famous Milsig HeatCore. Velocity is simply adjusted by an allen key. It is powered by 12 Co2 cartridges in the detachable magazine which can hold 10 round balls or shaped projectiles. Every magazine has its own Co2 cartridge.This concept guarantees you will not get out of power in critical situations. It has a detachable top RIS rail and barrel extender.
Powered by 12g Co2 cartridgesTool less Cartridge replacement10 rounds magazine .50 cal shaped projectiles readyAllen key velocity adjustment