Courtesy of Tactical Life The U.S. Marine Corps might be adopting the Army’s M855A1 round, officials said Tuesday. According to, the Corps currently uses M855 ammunition in its M16A4 and M4 5.56mm rifles rather than the M855A1 Enhanced Performance Round the Army employs for its rifles. The reason the USMC hasn’t gone with the M855A1 thus far is the fact that testing showed it caused reliability and […]