The M855A1, a 5.56 mm Ball ammunition, is an enhanced performance round for today’s combat and training environments. It works with the M4 Carbine, the M249 machine gun, and the H&K and M16A2 ...

Here’s What You Need To Remember: The combination of the Army’s dissatisfaction with the M16A2’s default sighting arrangement and the benefits of a lower optic mount lead the Army and Colt..

The M16A2 and M16A3 variants differ mainly in their ... The handguards were the same. The grip was enhanced. The butt stock ...

A shortened variant of the M16A2 rifle, the M4 carbine provides ... explores future improvements for the M4A1 Carbine to deliver enhanced reliability, durability, ergonomics and zero retention.