M855A1
E1027038
M855A1 is a U.S. military enhanced-performance 5.56×45mm rifle cartridge designed to improve accuracy, penetration, and consistency over earlier standard-issue rounds.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
5.56×45mm NATO cartridge
ⓘ
rifle cartridge ⓘ |
| abbreviation | EPR ⓘ |
| adopted | around 2010 ⓘ |
| alsoKnownAs | Enhanced Performance Round NERFINISHED ⓘ |
| ammunitionType | ball round ⓘ |
| ballisticPerformanceComparedTo |
higher muzzle velocity than M855
ⓘ
more consistent trajectory than M855 ⓘ |
| caliber | 5.56×45mm NATO ⓘ |
| category | small arms ammunition ⓘ |
| compatibleWith | STANAG 4179 magazine-fed 5.56×45mm weapons ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designedFor | combat use ⓘ |
| designedToMeetRequirementOf | U.S. Army Picatinny Arsenal small arms program ⓘ |
| designedToReplace | M855 green tip cartridge ⓘ |
| designer | U.S. Army NERFINISHED ⓘ |
| environmentalRegulationResponse | reduction of lead contamination on training ranges ⓘ |
| feature |
copper slug core
ⓘ
enhanced hard-target performance ⓘ environmentally friendly design compared to lead-core rounds ⓘ exposed steel penetrator tip ⓘ improved soft-target terminal performance compared to M855 ⓘ lead-free projectile core ⓘ |
| governingStandard | U.S. military ammunition specifications ⓘ |
| hasComponent |
brass cartridge case
ⓘ
non-lead projectile ⓘ primer ⓘ propellant charge ⓘ |
| improvesOn |
barrier penetration of M855
ⓘ
lot-to-lot consistency of M855 ⓘ terminal performance of M855 ⓘ |
| intendedPlatform |
M16 rifle
NERFINISHED
ⓘ
M4 carbine NERFINISHED ⓘ other 5.56×45mm NATO firearms ⓘ |
| isSuccessorOf | M855 ⓘ |
| militaryDesignation | 5.56mm Ball, M855A1 NERFINISHED ⓘ |
| optimizedFor | shorter-barreled carbines such as the M4 ⓘ |
| penetrationPerformanceComparedTo | better performance against steel and intermediate barriers than M855 ⓘ |
| propellantType | smokeless powder ⓘ |
| purpose |
improved accuracy
ⓘ
improved consistency ⓘ improved penetration ⓘ |
| standardIssueFor | U.S. Army combat forces NERFINISHED ⓘ |
| usedBy |
United States Army
ⓘ
United States Marine Corps ⓘ |
| usedInConflict |
Iraq War (post-adoption period)
NERFINISHED
ⓘ
War in Afghanistan NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.