<p>USP TACTICAL Enhanced versions of the USP, the USP Tactical models are 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, and adjustable target-type sights. The .45 ACP model of the USP Tactical is constructed on the USP45 frame. The 9 mm and .40 S&W Tactical models are built on the USP 9mm/40 caliber frame. The 9 mm variant, known as the USP9 SD, has a slightly different set of features. Features & System Characteristics: Threaded O-ring barrel with polygonal bore profile (no O-ring barrel on 9 mm variants) High profile target sights Match grade trigger (not present on 9 mm variant) Adjustable trigger stop (not present on 9 mm variant) Target sights with micrometer adjustment for windage and elevation One piece machined, nitro-carburized steel slide Can be converted to any of nine trigger firing modes Patented HK recoil reduction system Corrosion resistant “Hostile Environment†blued finish Corrosion proof fiber-reinforced polymer frame Oversized trigger guard for use with gloves Choice of flat and extended floorplate magazines Universal mounting grooves for installing accessories Ambidextrous magazine release lever Extended slide release Extractor doubles as a loaded chamber indicator Patented Lock-Out Safet</p>