I've been airsofting for a while but this is my first GBB pistol. I'm more of a CO2 guy myself, but I wanted the realism. I really like this USP, it's constructed well and operates very realistically. Mine came without the white dot on the front sight, but that appears to be a common problem and nothing a little white out can't fix. It's ergonomic, and fits well in my small hands. Accuracy lacks a little but that's what you get with a compact. FPS seems about normal for this type of gun. My only major problem is that I ordered an extra mag with mine, and it wouldn't feed correctly. I had to do some filing on the plastic part that feeds the bb but everything works fine now. This is an excellent gun for the price, especially because of the full auto feature.
good FPS and ROF
Kind of loud-I was afraid the neighbors would think I was shooting a real gun in my back yard
Full auto is fun as hell
Extra mag has feeding problems
No white dot on front sight
Selector switch is kind of stiff
Slide catch falls out if you're not careful after takedown