HK Mark 23 .45 ACP DA/SA Full-Size Pistol with Threaded Barrel, German-Made, 2x 10-Round Magazines
The HK Mark 23 is the civilian configuration of the pistol developed from the USSOCOM OHWS program. This German-made, full-size .45 ACP features a 5.87 in extended, threaded, cold hammer forged barrel with polygonal rifling and an O-ring for consistent lockup. It combines a one-piece machined steel slide, fiber-reinforced polymer frame with proprietary accessory grooves, and high-profile sights for confident, precise shooting.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent polygonal rifling - Clean, well-defined geometry.
Specific Condition Notes: This firearm is in great shape. There are minor, superficial scratches and blemishes on exterior surfaces. The bore is clean and shiny.
What’s Included
- HK Mark 23 .45 ACP pistol
- Two 10-round steel-bodied magazines with witness holes
- Factory thread protector installed
Developed from the USSOCOM Offensive Handgun Weapon System program, the Mark 23 is built for durability and precision. Proofed in Germany and imported by HKI (Columbus, GA), it carries DE and CIP N markings. The one-piece machined steel slide and fiber-reinforced polymer frame are finished in black and engineered for long service life.
The 5.87 in extended, threaded barrel is cold hammer forged with polygonal rifling and an O-ring to promote consistent barrel-to-slide lockup. A factory thread protector is installed, and the factory thread spec is commonly M16×1 RH. With an approximate 9.65 in overall length and a sight radius around 7.76 in, the platform emphasizes practical accuracy.
Controls are set up for duty-grade use: DA/SA short-recoil system with a separate decocking lever and a manual safety that permits cocked-and-locked carry. The ambidextrous paddle-style magazine release, extended slide stop, and oversized/squared trigger guard support easy manipulation. High-profile 3-dot iron sights include a fixed front blade and a rear adjustable for windage and elevation (retained by a screw).
Designed to interface with a suppressor and an aiming module, the frame features proprietary universal accessory grooves. SOCOM testing reported 30,000+ rounds of +P endurance, approximately 6,000 MRBS, and 1.44 in average accuracy at 25 m. This pistol ships with two 10-round magazines for a 10+1 capacity on board.