H&K Mark 23 | .45 ACP | 5.87″ Threaded Barrel | 12rd

The Heckler & Koch Mark 23 is a full-size stainless/steel and polymer-frame pistol built around match-grade accuracy and robust operational testing. This example is chambered in .45 ACP with a 5.87″ threaded polygonal barrel and ships with two 12-round magazines. For a rugged optic under $1,000 that complements the Mark 23 for target and duty-oriented work, consider the Trijicon RMR Type 2 red dot.

Common real-world applications include precision target shooting and duty/field use where a large-frame, accurate .45 ACP pistol is required.

Product Specifications

• The UPC is 642230267343.
• The manufacturer is Heckler & Koch.
• The model is listed as the Mark 23.
• The caliber is .45 ACP.
• The barrel measures 5.87 inches and is threaded.
• The action is Semi-Auto (Double Action/Single Action).
• The product includes 2 magazines.
• The magazine capacity is 12 rounds.
• The barrel type is Threaded polygonal.
• The thread pattern is 16x1mm RH.
• The slide finish is Black.
• The frame finish/color is Flat Dark Earth (FDE).
• The frame material is Polymer.
• The grip material is Polymer.
• The sights are described as 3-dot / fixed.

The Mark 23 blends a match-grade design with a service-oriented build: the threaded polygonal barrel and robust slide/frame combination are intended to deliver consistent accuracy and durability in extended use. This configuration, with two 12-round magazines and a flat dark earth frame paired to a black slide, suits shooters who prioritize a large-frame, precision-capable .45 pistol for range and field applications.

People have noted the Mark 23’s match-grade accuracy comparable to high-end custom handguns and that it is one of the most thoroughly tested service handguns.