Astech

I dressed up as a stormtrooper for a 10 year old's birthday party. Naturally I brought my (black + white, ARs totally removed) longshot as a prop, with a 12-dart magazine. When I put it down, a 7 year old apparently thought they knew how clip system blasters worked, so he kept racking the prime back and forth, wondering why it didn't shoot. I finally got a hold of it at pulled out the magazine, only to realise that 6 darts had somehow been fed into the breech. The gun was kinda incapable of movement at that point, but I happened to pull the trigger, and out popped a dart. I primaed and fired again, and out popped another dart, and another. And another.

After you remove the air restrictors, I'd advise you make the upper barrel a little tighter - probably by re-barrelling it. Normally when you remove the ARs you get a big upper shot and pathetic lower.

Alternatively, you could use a Roughcut to get an 8-shot blast.

It might also be a good idea to take a few pictures of the box and upload them. Apparently there aren't any yet.

Would making a pressure vessel out of slightly thicker polyester tubing be a suitable alternative to PVC then? Or would you lose the rip vs fracture advantage the thicker the material you use?

Soda bottles typically hold 60 PSI with no dramas (every brand and size I've tried can do this). Once you reach 100 PSI you're still safe, but in the zone where somebody stomping on it hard could set it off if you're unlucky. If you look at this article http://www.aircomman...nforcingBottles you'll find that soda bottles can reach 200 PSI safely - although you really don't want to be bumping it at that point. A 1.25 L bottle at 60 PSI is enough for about 3 full power shots, so it comes down to how much oomph you want out of it.

PVC really isn't a good pressure vessel - mainly because it has such a low ultimate tensile strength. That tensile strength is basically the ratio used to determine how much pressure a vessel can hold with a given radius. Polyester can have a higher tensile strength, but not by much.

PVC is expensive? I personally have 10 metres or so just lying around that I could use.

As for your actual mod, I like the idea, but over time it's going to get weaker considering the materials used. Maybe (white) pen shafts and epoxy would yield a more permanent version?