Heckler & Koch HK MK 23 5.87” .45 ACP Offensive Handgun Weapon System Kit
SOLD FOR: $3,000.00
LSB#: LSB251115DJ011
Make: Heckler & Koch
Model: Mark 23
Serial Number: 23-3354
Year of Manufacture: 1996 (KG Date Code)
Caliber: .45 ACP
Action Type: Double Action / Single Action, Semi-Automatic, Removable Magazine Fed Pistol with De-cocker and manual safety.
Markings: The left side of the slide has HK’s monogram logo and “MARK 23 / Cal. .45 Auto”, with an eagle over “N” nitro proof, the date code, an Ulm antler and the serial number. The barrel, visible through the ejection port, is marked “HK Cal. 45 Auto 23-3354”. The left grip panel is marked “HK .45”. The right side grip is marked “Heckler & Koch GmbH / Made in Germany / US PAT.5.309.815”. The dust cover is marked “Heckler & Koch.INC. Sterling. VA”. The metal inlay on the dust cover is marked with the serial number. The bottom of the trigger guard is marked with a warning.
Barrel Length: 5.87″ with M16x1 Left Handed thread.
Sights / Optics: The front sight is a white dotted blade dovetailed to the front of the slide. The rear sight is a windage adjustable two white dot square notch sight dovetailed to the rear of the slide. Three white dot sighting system.
Stock Configuration & Condition: The grips are integral to the frame with textured flanks and checkered front and back straps. The pistol has an accessory rail, ambi magazine release, ambi safety, left side de-cocker, and lanyard loop. The frame shows virtually no signs of wear. Overall the grips/frame are in Like New condition.
Type of Finish: Black
Finish Originality: Original
Bore Condition: The bore is bright and the polygonal rifling is highly defined. There is no erosion in the bore. This pistol appears unfired outside of factory testing. In this writer’s opinion the bore rates 10/10.
Overall Condition: This slide and barrel show minor handling wear with a few light surface level lines and some minor rub wear on the barrel hood. The markings are clear and the pins unmarred. Overall this pistol is in Like New condition.
Mechanics: The action functions correctly. The pistol has an intentionally heavier double action pull and a crisp, short single action pull with an excellent re-set. We did not fire this handgun. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance standards.
Box, Paperwork & Accessories: This pistol includes a Camouflage HK zipper case, 2x 10 round magazines and 2x 12 round magazines all in Like New condition(4 mags total), manual, paperwork and sticker.
Our Assessment: The Heckler & Koch MK 23 is an iconic .45 ACP semi-automatic pistol developed for the U.S. Special Operations Command (SOCOM) in the 1990s. Designed for extreme durability, reliability, and suppressed operation, it features an M16x1LH threaded barrel, making it compatible with the original Knight’s Armament suppressors. With four magazines and a production date from 1996, this example is highly desirable, especially in Like New condition. The MK 23 has always been relatively rare due to its limited production, as it was primarily made for military contracts, with only a fraction reaching the civilian market.
Beyond its military pedigree, the MK 23 gained widespread recognition through pop culture, prominently featured in films like Tears of the Sun and in video games such as the Metal Gear Solid and SOCOM: U.S. Navy SEALs series. Its large, intimidating profile, legendary reliability, and association with elite military units have cemented its status as one of the most recognizable and respected handguns ever produced. For collectors and enthusiasts alike, this well-preserved MK 23 represents both a functional powerhouse and a piece of military and pop culture history. Please see our high quality photos via the link and best of luck with your bidding!!!-R.L.