M4

The M4 is a carbine variant of the M16A2, still using 5.56 x 45 mm NATO rounds in 30 Round magazines. It still uses the semi- and 3 round burst modes. It has mostly replaced the M16 rifle in the U.S. armed forces as the primary infantry weapon.

Variants include:

- RIS variants which add rails with which to mount optics and barrel attachments

- M203 variants with an underslung M203 40mm grenade launcher

All variants have different camos

Users:

- Afghan Army commandos

- Canada (as C8)

- Croatia

- Mexican Marines

- United States

Variants from RH M4/M16 Pack