** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** The U.S. Army replaced its ...

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 rifles.

Sgt. William Francis Coffey II fires an M4 5.56mm carbine rifle April 2015. In 2018 the Marine Corps will be adopting the Army’s enhanced 5.56mm rifle round for Marines in combat. (Lance Cpl. Adam O.

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** The M855A1 cartridge is actually ...

ABERDEEN, Md. (Army News Service, May 6, 2011) -- Since June, the Army has fielded about 30 million of its new 5.56mm M855A1 "Enhanced Performance Rounds" in Afghanistan. The cartridge, sometimes ...

August 10, 2012: For two years now the U.S. Army has been using the new lead-free M855A1 5.56mm round in Afghanistan. The new round is more expensive and marginally better than the older M855. The ...

The House Armed Services’ Tactical Air and Land Forces Subcommittee has shed light on one of the more bewildering defense procurement realities: the Army and Marine Corps’ use different 5.56x45mm ...

Here’s What You Need To Remember: The round design for the M855A1 was finalized in 2010. The end product is a sixty-two grain projectile that has an exposed steel-tipped penetrator followed by a ...

PICATINNY ARSENAL, N.J. -- Perhaps no subject is closer to the hearts of Soldiers than their weapons and ammunition. For decades, this intense interest in "guns and ammo" has sparked sharp debate over ...