When it comes to gbb pistols, there are all shapes and sizes, and brands for that matter. I have owned three gas pistols and two of those were kjw pistols and both broke. There is no other brand I will buy for gbb pistols than KWA. The HK USP is made by KWA but is licensed and warrantied by umarex usa. The USP chronos around 330 fps with .20 gram bbs, however for max accuracy I recommend elite force .25 bbs. The mag holds 25 rds and will fire all 25 and then some on one green gas charge. The blow back is crisp and fast. The gun features a de-cocking lever/ safety. It also has a secondary safety in the mag well that is activated with a small key tool included. The KWA USP is all in all a top notch airsoft gun.
Pros: fps suitable for indoors
large mag capacity
60 day warranty
double action and de-cock
white dot sights
the mag release is easy and fast to use
Cons: The frame is a little big so it might not fit into some holsters, I can fit it into my condor drop leg holster with some persuasion.
The bottom "rail" section i guess you can call it, only takes a certain type of mount.
Rating: [5 of 5 Stars!]