This is a standard 9x19 mm USP fitted with the extended magazine well and 18 round magazines, as well as the match trigger from the USP Expert. The match trigger kit reduces the SA trigger pull from 20 N to 17 N and retains the DA trigger pull at 50 N.

The USP pistols come in the calibers 9x19 mm, .40 SW and .45 ACP. There are also aftermarket barrels in the caliber .357 SIG available. Additional info on the various USP models can be found at HKPRO and The Unofficial USP Homepage.