HK Mark 23 .45 ACP Semi-Auto Pistol, German-Made (2008 AI), Threaded 5.87 in Barrel, DA/SA, HKI Import
This German-made Heckler & Koch Mark 23 is a commercial .45 ACP variant tied directly to the USSOCOM OHWS program, marked with the 2008 "AI" date code and HKI Trussville, Alabama import stamp. It features a cold-hammer-forged, extended threaded barrel with an O-ring for enhanced lock-up, a one-piece machined steel slide, and a fiber-reinforced polymer frame. The pistol comes well-equipped with the factory case, four magazines, spare barrel O-rings, paperwork, and the factory thread protector.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Polygonal rifling with strong definition.
Specific Condition Notes: There is finish loss on the barrel exterior. Minor handling wear is present. The bore is clean and in great shape.
What's Included
- HK factory hard case with red HK logo (Mark 23-labeled)
- 2x 12-round magazines
- 2x 10-round magazines
- Factory knurled thread protector (installed)
- HK internal lock key
- Four spare barrel O-rings for Mark 23
- HK paperwork envelope/data card with model, caliber, and serial dated 28.04.2008
German manufacture and "AI" (2008) date coding align this commercial Mark 23 with its renowned service lineage. It carries German proof marks, the "DE" country mark, and the HKI – Trussville AL import mark. Overall dimensions are full-size, with an overall length of 9.65 in, height of 5.90 in, width of 1.58 in, and a weight of 2.66 lb with an empty 12-round magazine.
The 5.87 in cold-hammer-forged barrel uses polygonal rifling and an O-ring at the muzzle to enhance lock-up. It is extended and threaded M16x1 RH, and this pistol includes the factory knurled thread protector. A captured recoil/buffer spring system is included, and the slide is a one-piece machined steel unit.
Controls are purpose-built: DA/SA operation, an ambidextrous manual safety with decocker, and the HK paddle-style magazine release. The frame is fiber-reinforced polymer with aggressive grip texture and proprietary Mark 23 accessory grooves (non-1913) for a LAM/light.
Adjustable iron sights pair a tall front blade with an adjustable rear, delivering a long 7.76 in sight radius. Capacity is 12+1 rounds, and this example includes both 12-round and 10-round magazines to suit different needs.
Developed as the commercial counterpart to the Mk 23 Mod 0 from the USSOCOM OHWS program, this example captures the platform’s defining features and arrives with factory case, accessories, and dated paperwork that underscore its provenance.