a long version will be interesting also.
some good energy from a plastic gun
question , is the exhausted air expelled past the firing valve stem?
Very interesting!For quite some time I have been contemplating the Umarex T4E HDS Shotgun .68 to play with here on the forum.It is CO2 powered and there are projectiles and molds for this that I believe would be allowed here.
I tried to explain it in the video: This is the crucial part:The piston is slightly unbalanced and naturally wants to retract, but it's the locking balls (yellow) keeping it in place.When the flare gun firing pin hits the purple pin, the locking balls are no longer supported and there is nothing preventing the piston from moving, so it can retract and dump the chamber.