H&K Mark 23 .45 ACP 5.87 in Threaded FDE 10+1

About This Firearm

The Heckler & Koch Mark 23 is a .45 ACP semi-automatic pistol with a 5.87 in threaded polygonal barrel, Flat Dark Earth polymer frame, and ambidextrous safety. Includes two 10‑round magazines.

The Heckler & Koch Mark 23 is a large-frame semi-automatic pistol chambered in .45 ACP, built for reliable performance in duty and precision contexts. It pairs a threaded polygonal barrel with a steel slide and a Flat Dark Earth polymer frame featuring an accessory rail. The controls are user-friendly with an ambidextrous safety and a separate decocking lever; the package includes two magazines.

Key Specifications

• The caliber is .45 ACP.
• The barrel length is 5.87 inches and is threaded with a polygonal profile.
• The standard capacity is 10 + 1.
• The frame finish is Flat Dark Earth polymer with an accessory rail.
• The slide is described as serrated steel with a black Cerakote finish.
• The grip surface is textured for positive purchase.
• The action is Double / Single Action.
• The manual safety is an ambidextrous safety lever with a separate decocker.
• The package includes two 10‑round magazines.
• The design incorporates an HK-type recoil reduction system to reduce felt recoil and stress on components.

The Mark 23 represents a purpose-built approach to large-frame .45 ACP performance, combining a threaded polygonal barrel and robust slide/frame construction for consistent function under demanding use. Its controls and included magazines make it suitable for shooters seeking a stable, reliable platform for range work, duty applications, or precision-oriented training.