Mitragliatrice Leggera M63A1 Tactical Rail Ver G&PMuzzle Velocity (0. 20g): approx. 395 fps You heart will certainly beat faster when holding the Mk. 23! Once again, G&P creates a marvelous weapon, which is a new milestone in the history of airsoft gun production. You will not find any other LMG (Light Machine Gun) that is this powerful, this reliable and so beautifully designed at such a fair price. While being tested with a 9. 6V battery, the gun performed a magnificent 1200 shots per minute firing