The Mark 23 is a purpose-built full-size .45 ACP pistol designed for duty, service, and range applications. Its combination of a threaded polygonal barrel and robust controls supports consistent performance in demanding use cases.

The handgun pairs a serrated steel slide finished in black Cerakote with an OD green polymer frame that features a textured grip and an integrated accessory rail. Sights are configured as white 3-dot, and the controls include a decocking lever that is separate from the ambidextrous safety lever. The pistol also incorporates an HK mechanical recoil reduction system and is supplied with two magazines.

Key Specifications

The manufacturer is Heckler & Koch (H&K).
The model is Mark 23.
The caliber is .45 ACP.
The barrel is 5.87 inches with a threaded polygonal profile.
The slide finish is black Cerakote on a serrated steel slide.
The frame is OD green polymer with an integrated accessory rail.
The sights are white 3-dot.
The controls include a decocking lever separate from the ambidextrous safety lever.
The design includes an HK mechanical recoil reduction system that reduces forces by 30%.
The package includes two magazines.