What i used to do to stop it from rolling out the barrel was cut the end of a water ballon (The Stem) And tape the cut end to the outside and insert the end with the ring on the inside. This shouldn't stop the bb, as it should just build the pressure up behind it, and cause it to fire. Combine that ...

Oh alright then, well i might make the silencer from the end of the chamber to the en of the barrell. Ill have to work on it. Thanks.

Very well constructed. How long did it take you to build? Overall it took me about 6 months of which to build, altho that was not 6 months straight, more or less when i had time. It had been sitting in the shed for the last 10 or so months, with the occasional use to impress the friends :wink: Then...

Ah right well ill do a bit more research and head on down to bunnings and get some parts, and i live in SA, what about yourself? Yeh i use blow guns, and 1/4 taps. Ill find something. Yeh ive seen the threads on the expoxy castings. Also if i built a coaxial how big do i need the equalization holes?...

Cheapo imitation unfortunatly, but it does the job

I can't really think of much else to do with it, laser pointer maybe, and flashlight. Just to spice it up.

What would be the performence differences? I'd get a 1/2" QEV that way it'd have more flow. I'm still going to give the Coaxial a go.

Whats a good face to use on the piston for a good seal? The last face i used did not seal on the barrel so i gave up.

Hey thanks for the link, they look different, almost better. Do they work the same as the one's you see on here? I'm guessing the exhaust port cant be seen in the photo?

Thanks.

I don't know really, i'm a bit on the lazy side when it comes to making the valves. I tried making a piston cannon before and that just failed. I'm tempted now that i just looked at that link, ill have to have a try. Theres a coaxial explanation on here somewhere isnt there? But i'd still like to kn...

Hey This cannon has been posted on here before (I'm talking almost over 2 years ago) but it was very basic and since then it has had rebuilds, paintjobs, accessorys and lots of little adjustments. Specs: Type: Pneumatic Ammo: 16mm Marbles Pressure: 80-140psi Configuration: Under-over Valve: 3/4" Mod...

Hey all Been a long time since i've been on spudfiles, my old user name was Thursto, or Rapidfire i cant remember. But anyways i wanted to start over so i decided to make a new account. I've recently stumbled across an old rifle stock and have decided to make a BB gun out of it. If you don't remembe...