Heckler & Koch G28

About the Heckler & Koch G28

The Heckler & Koch G28 is a designated marksman rifle adopted by the German Bundeswehr in 2012, based on the HK417 battle rifle platform. Featuring a free-floating barrel, short-stroke gas piston system, and match-grade two-stage trigger, the G28 provides sub-MOA accuracy in a semi-automatic platform that allows rapid follow-up shots. The rifle was selected by the United States military as the M110A1 Compact Semi-Automatic Sniper System (CSASS), replacing the Knight's Armament M110 SASS.

The G28's selection as the US military's M110A1 CSASS marked the first time a German-designed semi-automatic precision rifle was adopted as a standard-issue American military weapon. The rifle beat out several American competitors, a testament to HK's engineering of the short-stroke piston system that delivers both precision accuracy and the legendary HK reliability in adverse conditions.

Heckler & Koch G28 specifications

The G28 is derived from the HK417 but with significant modifications for the precision shooting role including a match barrel, improved trigger, and enhanced optics mounting system. The Bundeswehr procured the G28 in two configurations: the Patrol variant with a shorter barrel for general use, and the Standard variant with a longer barrel optimized for precision shooting. The US M110A1 CSASS variant is chambered in 7.62 NATO and uses a 16.5-inch barrel, slightly shorter than the German standard variant. The G28's short-stroke gas piston system provides excellent reliability while keeping the action cleaner than direct-impingement systems.