The HK Mark 23 pistol gives shooters match-grade accuracy equal to that of the finest custom made handguns, yet exceeds the most stringent operational requirements ever demanded of a combat handgun. The Mark 23 provides this accuracy without the need for hand-fitted parts common in custom-built match pistols costing thousands of dollars more. The Mark 23 has a threaded O-ring barrel with polygonal bore profile. The patented HK recoil reduction system makes the Mark 23 comfortable to shoot. With a corrosion-resistant blued finish and a corrosion-proof fiber-reinforced polymer frame, it's sturdy enough for any environment. Additional features include: an oversized trigger guard for use with gloves, universal mounting grooves for installing accessories, a frame-mounted decocking lever and separate ambidextrous safety lever, an ambidextrous magazine release lever, and an extractor that doubles as a loaded chamber indicator.