The AWAC D4 M1 is the large upgrade to the AWAC D3 M1. So large, I constituted it as a design change instead of just a Mk. change. It has exchangeable barrels, something I've wanted to do for a long time. Currently, it has a 3" by 2' barrel, so I can finally fire off some decent WBs. I switched the street elbows with 90 degree corners, and put the valve on top. My compression chamber increased in volume, though not significantly, and putting the valve on top produced a noticeablly sharper crack when fired, even at low pressures. Since it's kind of nasty outside right now, I'm going to wait until later in the week to test this thing's range and max power. I'll try and get more pics, then too. I used lots of primer, so the thing isn't exactly pretty, but it gets a whole lot prettier when you have it in your hands. That large thing that looks like a clump of duct tape is some old books I'm using as a barrel support, until a buy some decent wood.


Here's a pic of the whole cannon:

Looks good. Not too different than your last one, though.

Actually it's a lot different. In fact, the only thing that is the same is the compression chmaber and the valve I'm using. The entire back of the gun is new, plus a new barrel.

Well, I meant the basic design. It's just bigger and the valve was moved a bit.

Nice work. That thing must be really powerul, considering the size of the air chamber and the fact that you moved the valve much closer to the barrel.