MK23

H&K MK23 SOCOM is a large-caliber service pistol developed by the German manufacturer Heckler & Koch for U.S. Navy special operations units under the SOCOM Offensive Handgun program in the early 1990s. It was designed as a precise, rugged, and highly reliable sidearm intended for use with a suppressor and laser aiming module. The highest-quality airsoft replicas are offered by Tokyo Marui, and on our e-shop you can find the SSX23 upgraded version by Novritsch.

Origin and purpose of the MK23 SOCOM

The goal was to create a quiet offensive handgun suitable for special operations. The pistol needed to:

operate reliably in extreme environments,
deliver high accuracy at extended distances,
allow mounting of a suppressor and the LAM laser module.

The result was one of the largest and most powerful modern semi-automatic pistols chambered in .45 ACP, made famous primarily through its use by Navy SEALs.

Benefits of the MK23 SOCOM design

extreme reliability and long lifespan,
high accuracy due to robust construction,
quick attachment of suppressors and optical modules,
reduced firing noise with suppressor use.

Airsoft versions of the MK23 SOCOM

The MK23 became legendary in airsoft thanks to its quiet operation and unmatched reliability. The two most well-known variants are:

Tokyo Marui MK23 NBB – gas non-blowback (GNB), extremely quiet, widely regarded as one of the best airsoft sidearms for stealth.
Novritsch SSX23 – a modernized and enhanced MK23 replica with a higher-precision inner barrel, TDC hop-up design, and broad accessory compatibility.

Both versions are among the most common secondary weapons for snipers and stealth-focused players because their GNB system offers very low gas consumption and stable performance.