I have finally completed a simple coaxial pengun, yet another copy of a copy of JSR's design from so long ago. I'm very happy with it! 20201216_154331_HDR.jpg The build is made up of two 1/8" brass pipe nipples coupled together, with an OD 7mm ID 6mm stainless tube epoxied inside. Inside of that tub...

I shot a tin can with a nail using the pen gun @ 1000psi. I was quite happy with the results...

When I shot it, I saw orange sparks fly out, and it smelt like smoke... Is that normal?? Lol.

Entry: Exit:

:D Okay I have all my new components! Unfortunately though, since my piston's seal has already worn out, I cannot shoot the new ammo quite yet. For the new seal, I am using 1/16" Ultra Strength Neoprene from McMaster, which I think will last much longer than the old seal, which was simple Natural Ru...