Science Experiment 9mm Blowback

I started this gun about eight years ago but I could never get it to work and I never even tested it. But about four weeks ago I picked it up and fixed lots of the problems. So, the gun was never intended to be a good looker, it was always a science project. This is a 9mm blowback, semi auto. It has a heavily altered Uzi barrel. The upper housing is steel, and the lower is aluminum. The stock is made from cherry, painted black. It has a custom front grip, and takes Glock magazines. The weight of the bolt was determined mathematically and it seems to work very well. Check out my channel for me odd stuff like this. Thanks, be safe, and God bless.