This is every rifle the Marine Corps has issued to Marines in the service's 250-year history, from muskets to M4s.

November 28, 2015: The U.S. Marine Corps has decided to equip all their combat troops with 17,000 M4 carbines and relegate their M16A4 rifles to support troops .Eventually all M16s will be retired and ...

The U.S. Army’s M855A1 5.56mm round, inside and outside of its casing. The Army adopted the M855A1 in 2010 to replace the Cold-War era M855 round.

November 28, 2015: The U.S. Marine Corps has decided to equip all their combat troops with 17,000 M4 carbines and relegate their M16A4 rifles to support troops .Eventually all M16s will be retired and ...