The HK433 [MARS] and HK433PDW at Enforce Tac 2026

Summary

Heckler & Koch showcased its HK433 Modular Assault Rifle System (MARS) and the compact HK433PDW variant at Enforce Tac 2026. The HK433 platform is a 5.56x45 NATO rifle designed for military and law enforcement, blending G36 and HK416 features with extensive modularity including barrel lengths from 7 to 16.5 inches and interchangeable lower receiver styles. The HK433PDW, weighing approximately 3.1 kg, is available with 7-inch and 9-inch barrels for close-quarters applications.