Gas handguns have been with us for decades. Often being considered as the simplest form of semi-auto airsoft weaponry, Gas handgun is the ideal choice of sidearm due to the strong power it can deliver and the simplicity in usage. Serious Gas handgun upgrade and maintenance involves much more than just the use of more powerful gases or booster kit. You want to ensure that FPS is not increased at the expense of reliability. You want to be able to shoot without recharging gas every several rounds. And you want your gun to last long. Practical Gas Airsoft Pistols Upgrade & Maintenance tells you what needs to be replaced or reinforced to sustain the high impact brought by gases such as Top Gas and the like. It teaches you how to keep your gun at peak performance, and how to keep it in good shape. And the best of all, it provides you with tips and tricks that are practical and affordable. This is the NEW 2011 edition with many new topics and new photos added into the book. Contents are not model specific, although the 1911 GBB is used extensively for photo demonstration. AirsoftPRESS technical books are written specifically for the do-it-yourselfer, yet are complete enough to be used by professional airsoft gunsmiths. Since 2005 AirsoftPRESS has produced technical books written from hands-on experience based on airsoft teardown with hundreds of photos and illustrations, making AirsoftPRESS the world leader in airsoft technical information.