So its a hammer vavle gun, with a c02 fire extinguisher valve, 8mm hole, very effective.
I can have betwen 40 and 60 shot with this big cooper pipe, hammer valve is great design i should have made one before.
I can regulate the power by turning the screw, so i can shot when the pressure is high and low with the same projectile speed. I mean you can shot at the end when the pressure is low, without loosing all the air in one shot, like if you had a powerfull spring to shot at high pressure.
Ask me if you have questions!!
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