HK USP9 SD USP 9mm Tactical Semi-Automatic Pistol Overview
The HK USP9 SD USP 9mm Tactical Semi-Automatic Pistol is designed
for users who need the features found on the HK Mark 23, but in a more compact pistol.
Both pistols approach the precision found on the Mark 23 by adding
an extended threaded barrel with a rubber O-ring, adjustable trigger, as well as adjustable target-type sights.