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...

Oct 4, 2024 · The M855 (left) consists of a copper jacket, steel penetrator core and lead plug. The M855A1 (right) is manufactured from a copper jacket, steel arrow head core with a copper plug. The M855A1 projectile fit the Army requirement for a …

Jun 13, 2024 · “Green tip” 5.56x45mm NATO rounds, properly called M855 rounds, have been a subject of much debate and controversy in recent years. To help clear the air (as much as we ever can around an issue like this, anyway), we wanted to …

Nov 26, 2010 · In 1982, the Army adopted the 5.56mm M855 round to replace the M193 in an effort to achieve better performance at longer ranges with the M249 Squad Automatic Weapon (SAW). A steel penetrator in...

Oct 13, 2022 · The M855 was optimized for the longer-barreled M16 series rifle. The M855A1 uses a faster burning powder that creates more pressure and amps up velocity. This higher velocity results in more effective penetration and down-range performance.

The 5.56×45mm NATO SS109/M855 cartridge (NATO: SS109; U.S.: M855) with standard 62 gr. lead core bullets with steel penetrator will penetrate about 38 to 51 cm (15 to 20 in) into soft tissue in ideal circumstances.

Jun 17, 2022 · M855 ammunition, also known as “green tip” ammo, is a type of brass-cased, lead/steel-core hybrid rifle ammunition in 5.56x45mm NATO. It is a 62 grain bullet with a steel penetrator tip and a full metal jacket (made of copper). The M855 has been the standard issue rifle ammunition for the U.S. Military since 1983.

May 9, 2016 · I fired m855a1 for the first time last week. It was used for the Winston P Wilson this year. Seems much more consistent (and accurate) than m855 and zeros higher indicating it shoots flatter. I ended up with some really weird dope on my a2 with it, and some of the guys with acogs were struggling with precise use of the BDC.

They also adopted the new FN bullets and the US specs for the loaded rounds are called M855 and M856. About the time the SAW was adopted, the M16 "A2 revision" program was underway and it was decided to adopt the new SAW ammo (and its rifling twist) for the M16A2.

Aug 15, 2022 · The M855A1 matches the M855 almost perfectly in terms of the ballistic path. This allows Soldiers, Marines, Airmen, and Sailors to train with the M855 but use the more expensive, lead-free M855A1 for deployments.