A shortened variant of the M16A2 rifle ... while Phase II explores future improvements for the M4A1 Carbine to deliver enhanced reliability, durability, ergonomics and zero retention.
The Army has awarded a contract for a new variable-power rifle optic designed to replace the existing Rifle Combat Optic (RCO) on the M4A1 carbine By Jared Keller Updated on Dec 8, 2020 4:28 AM ...
The M4A1 is a modern classic assault rifle, used most notably by the US ... some of the developer's most immersive creations.