Heckler & Koch Mark 23

by
posted on April 30, 2022
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Heckler & Koch Mark 23 pistol handgun right-side view black gun USSOCOM issue military weapon

In the late 1980s, a U.S. Special Operations Command survey found more than 100 different close-quarters small arms configurations were fielded by American troops at the time. That kind of diversity is a logistical nightmare when it comes to field maintenance and repair. An effort to find a standardized pistol to remedy the problem launched shortly after results were published.

Heckler & Koch began developing its Mark 23 in response, with the first models coming out of the factory in 1991. Wearing an Insight Technology laser aiming device and Knight’s Armament suppressor, it won the USSOCOM competition and was officially issued in 1996. Special forces received it under the military label Mk 23. It is one of the few .45 ACP-chambered semi-automatics to enter U.S. military service since the venerable 1911.

Law-abiding citizens can own the handgun, which sells as the Mark 23 on the civilian market. It doesn’t come wearing the suppressor or laser, but it still packs the same match-grade performance and “thrivability” through conditions under which other guns to surrender.

The threaded barrel measures 5.87" and the semi-auto’s overall length comes in at 9.65". Width is 1.53" and it weighs 39.36 ozs.

The double-action/single-action comes with a match-grade trigger and its safety and magazine release are ambidextrous. The left side of the polymer frame has a decocking lever and the machined steel slide, in keeping with the military mission, is one-piece. The extractor does double duty, serving as a loaded-chamber indicator and accessories can mount on the dustcover rail.

As for reliability, the Heckler & Koch website explains during USSOCOM testing, “Endurance testing demonstrated a service life of over 30,000 rounds of +P ammunition. To meet the reliability requirement, the pistol had to demonstrate a minimum of 2,000 mean rounds between stoppages (MRBS) with both M1911 ball and +P ammunition. All pistols exceeded the 2000 MRBS with an average of 6000 MRBS.” Accuracy average 1.44" at 25 meters.

Sights are fixed with a square notch at the rear and contrasting points. The pistol ships with either 10- or 12-round magazines (two of them) and MSRP is $2,639.

Latest

Smith & Wesson Model 386 Night Guard
Smith & Wesson Model 386 Night Guard

Review: Smith & Wesson Model 386 Night Guard

Lipsey’s has teamed up with Smith & Wesson to revive a pair of short-lived, but highly sought after, Night Guard revolvers. The K-frame options include the Model 386, a seven-shot design chambered in .357 Mag.

Standing Guard | We Need to Stand Tall Together

In the short time I have been in this position—humbled and honored to be serving you and our cause—I have focused on streamlining our programs and services, refocusing our efforts on our competitions and other events, and committing resources to the many legal and legislative fights we are in to defend and, where necessary, to win back our Second Amendment-protected freedom.

B&T USA Expands Manufacturing Operations in Utah

B&T USA's Utah location now handles product design and development, 3D-printing, machining, Cerakoting, engraving and shipping, and it boasts a production capacity of 7,000 suppressors a month.

PenFed Reports Strong Second-Quarter Performance

Building on the company's impressive first-quarter results for 2026, PenFed Credit Union, one of the nation's largest credit unions, reported strong financial results through the second quarter of 2026.

The NSCA Sporting Clays National Championship

Every fall, the National Sporting Clays Association holds its national championship at The National Shooting Complex in San Antonio, Texas, and thousands of sporting clays shooters from across the world come to compete for titles.

Rifleman Interview: Smith & Wesson Model 617 Mountain Gun

Smith & Wesson and Lipseys brought a special .22 LR revolver to the Plinkapalooza event in May.

Interests



Get the best of American Rifleman delivered to your inbox.