This category includes airsoft guns co2 fixed yoke, more commonly known non blowback. These airsoft guns have the advantage of consuming far less CO2, intending to irregular users or simply to serve as a "Backup" that is to say, in part secour reply. Not having to use some of the power to move the cylinder head, the replica concerve and uses all the power Co2 offers. Co2 is one of the great families in airsoft replica, you use only 12gr cartridge to propel your ball 6mm, for some, less binding than a gas cylinder. Remember to adjust the weight of your balls depending on the power of the replica, usually between 0.20gr, 0.23gr and 0.25gr. In addition to their low power consumption, these replicas are often advantageous for their low price.