SpudFiles

Shaping up nicely! What will you be using as a trigger valve?

just coming straight through the pressure washer trigger, I know this won't have good flow but I don't really have vast amounts of compressed air to feed it with anyway. I'll just be happy if something comes out the barrel when I pull the trigger.

I don't really have vast amounts of compressed air to feed it with anyway

Paintball tank + pump and you're sorted, just saying

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Got most of it together, sealed the pieces together with clear silicone. It is a bit of a Rubiks cube to assemble

Love the look on this one!

Got it finished, rate of fire is high needs lots of air to run and is very messy if I don't catch the BB's Now I know why I like single shots so much.
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Looks great! And shoot cute too. Nice work
If you need a little air, you can install a fairly large tank, then the pressure regulator of your compressor, with an air outlet, towards the gun, large, without retention, an 8mm hose. This will increase the available flow, albeit briefly. I've tried it with my automatic weapon model and everything works better. The bursts are more constant and sustained. It is an opinion only

Yes, air supply is key with this one

Nicely done, power does seem a little on the low side however, likely because of the size of the air chamber that allows for too much expansion.