The famous Czech gun, that was used by Soviet Tankers and still in service in many countries, is now available in a gas blow back powered replica from KSC/KWA! It features a full gas blow back system powered by green gas and has a folding stock, which is made out of metal which makes it very sturdy. The magazine holds 20 rounds, which is enough for a backup weapon. Most of the gun is made from a high strength polymer, which gives a nice solid feel when you hold it.
As with all Gas Blow Back weapons performance varies depending on ambient temperature and speed of firing.