Okay so this is the first gun i have posted, although not the first made. It is a coaxial piston cannon. It is the first working piston cannon i have created and I LOVE this thing.

Specs

Overall- 52 inches

Chamber- 16 inches of 1 1/4 inch pvc

Barrel- 35.5 inches of 1/2 inch sdr 21

Exhaust- 1/4 ...

So here is my much awaited (by me) pump action, firing 1/4" steel BB's. Magazine holds 20, slide mechanism moves about 1/2" and as an added bonus if the slide is held back you get full auto :lol:

Everything hand made, mostly aluminum, slide is stainless fabricated out of 8 pieces (I made it too ...