Mark 23

The Heckler & Koch Mark 23 is a semi-automatic pistol chambered in .45 ACP, originally designed as a highly durable service handgun for military use under extreme conditions. Developed for the US SOCOM program, the pistol was adopted after extensive testing as the MK23 Mod.0 by U.S. special operations forces. The design features a locked-breech system with a modified Browning-type locking mechanism combined with a patented recoil reduction system, significantly reducing stress on the frame and slide during firing.

The pistol has an overall length of approximately 245 mm, with a 149 mm (5.9") barrel that, together with a 197 mm sight radius, contributes to excellent practical accuracy. The overall height is around 150 mm, while the width measures about 40 mm, reflecting the pistol’s massive and robust construction. The unloaded weight is approximately 1,100 g, which helps to effectively manage recoil even when firing powerful .45 ACP ammunition. The Mark 23 is fed from a double-stack magazine with a capacity of 12 rounds, an unusually high figure for this caliber.

The Mark 23 was subjected to extensive endurance testing, including prolonged use with high-pressure ammunition, demonstrating exceptional durability and reliability. The pistol is engineered to operate reliably across a wide range of temperatures and in adverse environments involving moisture, sand, mud, or saltwater exposure. The grip geometry is optimized primarily for shooters with larger hands, and the controls are ambidextrous. As a result, the Heckler & Koch Mark 23 remains a benchmark handgun, widely regarded for its outstanding robustness, accuracy, and long-term service life among large-caliber service pistols.

Parameters:

• Caliber: .45AUTO
• Barrel length: 149 mm (5.9")
• Overall length: 245 mm
• Magazine capacity: 12 rounds
• Trigger mechanism: SA/DA
• Weight: 1100 g