Quote:
Originally Posted by Mr.Hitman
Gas coming out side of your piston? Probably worned out o-ring?
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You mean the o ring at the back if the air nozzle that slides within the bolt? Naw, it's a perfectly new open bolt system. When the air nozzle begins to retract with the bolt, gas continues to be discharged from the magazine until the bolt retracts far enough to disengage the fire pin delay via the hammer. The same thing also happens with the AWSS closed bolt system with the air nozzle/NPAS