I have this wingun 1911 co2 version. Shooting 395 fps with. 2s Has quick change spring system and extra springs so fps is adjustable up to 550 or down to 200. Comes with an extra mag Niether of them leak at all. This is the non blowback version so you get incredible gas efficiency. I usually reload the 16rd mad 5 or 6 times before a new 12 gram is needed. Asking $50 shipped. Hit me with offers check my page.