One of the most famed handguns ever produced, the HK Mark 23 Semi-Auto Pistol - .45 ACP is loved among professionals in the field and collectors alike. Milled from a single piece of machine steel, the slide is coated in HK's proprietary Hostile Environment coating for superior protection against corrosion. At the heart of the Mk. 23 is its 16X1 right-hand threaded, polygonal rifled barrel, which is designed to reduce fouling and improve muzzle velocity. The Mk 23 is also one of the more accurate pistols to ever see service. Chambered in .45 ACP, the barrel is designed to handle +P ammunition consistently, making it one of the most durable handguns on the market today. Paired with the barrel is H&K's recoil reduction system further aiding in smooth operation and even quicker target acquisition. This special production frame is made in Flat Dark Earth and loaded with quality features. H&K gives you a fiber-reinforced polymer frame, a manual safety, decocking lever, universal mounting groove, and an oversized trigger guard to accommodate the use of gloves. This rare firearm would be a crown jewel in anyone's collection. Incredible durability and reliability Full-sized pistol Chambered in .45 ACP Machine-steel slide Threaded barrel with O-ring and thread protector Fixed sights Extractor doubles as loaded chamber indicator Fiber-reinforced polymer frame Flat Dark Earth frame