ps, i dont think the picture does it justice, its about 8feet long,
3 inch chamnber 1.5 inh barrell sdr 26 for golf balls, the didnt have sdr 21, but my barrell is removable so when i find some ill buy that. the golf ball arrow i made shot about a hundred yards with just a ball valve and thirty psi. i aimed it almost straight up too, the hang time was enormous.

i cant wait till i make it wokr.
another ps, my chamber stops at the first tee valve, i glued and siliconed a C battery into the back half of the two tee valves to block the air because i couldnt find any pvc "stoppers"