Here's the new gun:
It was about $30 from PA. Definitely works better than the one that was included, but it's also pretty janky. They had a much more expensive one made by a real brand, I went back and forth on it and figured I'd try this one. I'd say it's fine with the crushed glass. If I had a bigger compressor and lines maybe I could justify the bigger/better gun, but if I'm going to do that it would be down the road.
I did wind up modding the bucket again:
I don't know if it will work better or not, it probably will. The other setup worked find in that the water trapped everything but the ultrafine dust. That dust the vacuum should have caught, but it didn't because it has a horrible flow in the design. This is now pretty bojang, but I didn't feel like buying anything and that's what I had for previously enjoyed ABS lying around.
Shop vac micro:
The way it's designed the filter is not sealed onto the hose, so fine dust has no issue bypassing it. Honestly this will be the last Shop Vac branded anything I buy, they build some crap products and ride on their name.
The "fix"
I jammed another piece of ABS in there and a bunch of free (expired) clear silicone. I'll see if it fixes it next time.