My first spud gun. It is a pneumatic piston gun, with easy changeble barrel (within 10 sec's). The mounted barrel is breech loaded. It uses reloadable shells. It has a chamber of 1" to 50 cm. The pilote valve is triggered by a ball valve. A pistol grip is welded to the lower side, so the ball valve can be pulled open easily. The barrel has a fortification above the breech, looking like the handle of a M16.
Due to the fact I have a compressor with a max of 7 bar (100 psi), I just shot the gun several times of a thin wooden plate. The marbles went trough. That was a nice feeling

I realy need to buy a high pressure pump, or make one.
Anyway, here some pics of the gun :
The MB1 in all it's glory :
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Me holding the gun, just to give you an idea how big it is. (BTW, I am 6ft20, not 3 ft

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Changeble barrel pic :
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Damage pics :
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These are the shells I use :
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And again :
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Pic of the shell, right one, a cheap one, made mostly out of PVC, to the right, a full copper shell :
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Pic of the breach with shell in it:
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I am gonne add a self made bipod, which is mounted on my .177 air rifle for the moment. I also am gonne add a sight (probably a scope, got one lying around here)
So guys, what do you think about this first gun ?