This type of pistol is easy to use and features a very low amount of moving parts making it very reliable, pistols that are non blowback use all of the force of each shot to propel the bullet and not to perform any other action making them typically more powerful than a gas blowback and use less gas. These type of pistols are usually cheaper than blowback weapons and are generally favoured by newer players, or those who prefer gas economy and power over realistic action. a good thing about gas powerd pistols is that unlike spring pistols you dont have to cock the gun to shoot so you can fire as fast as you can pull the trigger. There are two different types of gas containers that are used within gas pistols, the first being aerosol style cans that are used to load an internal gas chamber in the magazine of the gun, or C02 Capsules – these are inserted into the magazines and are simply replaced when empty. (Both found here: C02 or Green gas) For more info see our bb gun pistol buying guide.