The HK USP Compact is the compact variation of the full size HK USP. The USP Compact maintains the same build quality of the full size while being in a smaller package. The USP Compact is available in the 9mm, .40 S&W, .357 SIG Sauer, and .45 ACP cartridges. The 9mm holds 13 rounds, the .40 and .357 12 rounds, and the .45 holds 8 rounds.
The Compact magazines are different from the full size due to their smaller dimensions, but the manual of arms between the two pistols are one and the same. To that end, the USP Compact is a double action single action hammer fired pistol with a frame mounted safety and decock lever that should be easy for your thumb to reach. This lever along with the slide release lever are both oversized in order to be easy to reach with a gloved hand.