5.56 – MT-X

AREX’s 5.56 MT-X Marker Training Ammunition are designed for safe and effective force-on-force training for military and law enforcement personnel. These non-lethal rounds are compatible with most training weapons. The MT-X rounds feature a non-toxic, pH-neutral marking compound and a specialized design that cleans the barrel with each shot, minimizing jams and ensuring reliability during training exercises. The ammunition supports full magazine loads and automatic fire, offering a larger impact pattern for better marking. Its unique construction includes an ultra-thin copper o-ring that acts as a self-cleaning mechanism, reducing paint and plastic residue in the barrel​.

A .556 bolt assembly conversion kit is also available.