KSC has reproduced the classic M93R pistol complete with Semi, 3-burst, and full-auto modes. This is a full metal version. The KSC M93R Ver.2 is much more efficient than its predecessor due to its System 7 design and is able to fire an entire 32+1 mag on full auto uninterrupted! Please note that all aftermarket products may require professional installation. For increased compatibility, please use consistent aftermarket branded parts to upgrade your GBB, or consult your local gunsmith.