The ×45mm NATO (official NATO nomenclature NATO) is a rimless bottlenecked intermediate cartridge family developed in Belgium by FN Herstal. It consists of the SS, SS, and SS cartridges. Under STANAG , it is a standard cartridge for NATO forces as well as. 5 May STANAG (Edition 2). 1. The enclosed NATO Standardization Agreement which has been ratified by nations as reflected in page iii is. 25 May A STANAG an agreement among several or all member nations to adopt like or similar . – mm ammunition STANAG ratified.

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5.56×45mm NATO

Underperformance is thus attributed to errors in range and wind estimation, target lead, firing position, and stress under fire, factors that can be resolved through training. The Marines fielded the Mk gradually and in small numbers.

Initially, Phase I efforts created the M “green tip” 5. This fragmentation effect is highly dependent on velocity, and therefore barrel length: Harvey was ordered to cease all work on the SCHV to avoid any competition of resources. The first prototypes were delivered to the government in August As information began to be made public, the original program objective to create a “green round” led to confusion and criticism that the Army was focusing more on environmental safety than on performance.

The MA1 offers several improvements other than being lead-free. Critics argue that sonic pressure waves do not cause tissue disruption and that temporary cavity formation is the actual cause of tissue disruption mistakenly attributed to sonic pressure waves.

NATO – e-Library

This fragmentation does not occur because the design conforms to international peace treaties such as the Hague convention, which outlaws the use of ammunition that is designed to stanzg in the body. The development of the cartridge that eventually became the. Retrieved 16 January As the services were purchasing large numbers of optics, it could not require a different reticle pattern, but re-zeroing sights would be acceptable. Two other yaw issues: The steel-tip penetrator of the MA1 is noticeably separated from the stanxg of the bullet and can spin, but this is part of the design and does not affect performance.


The Gw Pat 90 cartridge dimensions are in accordance with the civilian C. Issues came up in development including reliability problems in different temperatures and when the weapon got dirty, and cycling issues in cold weather due to the slightly shorter barrel of the SPR compared to the full-length M16A2 barrel.

The result of this is that there is no such thing as “5. Retrieved 6 March The United States Marine Corps purchased 1. The AAC Blackout 7. The Interview – SAdefensejournal.

Tsanag lead portion fragments in the first few inches of soft tissue, then the solid copper rear penetrates 18 in of tissue shown though ballistic gelatin while tumbling. Views Read Edit View history. The exterior dimensions of the 5. Developmental efforts led to the creation of the Mk As the issue of environmentally friendly ammo grew, the Marines looked to see if the Mk’s lead could be replaced while still meeting specifications.

The tip is serrated and larger than the M’s steel tip. Archived from the original on 16 July Retrieved 14 October This lack of expansion does however help with penetration of light cover such as walls, since the round does not expand it does not experience as much drag and can pass through more wood, thin metal, and other objects than most civilian ammo would be likely stznag do.

Army Combat Experimentation Center. The problems were addressed with a slower burning powder with a different pressure for use in the 44172, creating the Mk Mod 1 stanwg To address these issues, various proprietary chambers exist, such as the Wylde chamber Rock River Arms [65] or the ArmaLite chamber, which are designed to handle both 5.

Optimizing the round to perform within the pressure limits for short barrels would cause performance loss in longer barrels causing complaints from the Marine Corpsbut analysis showed that a short barrel-optimized round would have less performance loss fired from a long barrel than vice versa.


The MA1 costs only 5 cents more per round than the M Commercially available loadings using these heavier and longer bullets can be prohibitively expensive and cost much more than military surplus ammunition. Both the Mk and MA1 weigh the same and have similar performance, and both have better performance than the M stamag all targets.

×45mm NATO – Wikipedia

All these cartridges have certain advantages over the 5. Army Times Publishing Company. The first confrontations between the AK and the M14 rifle came in the early part of the Vietnam War.

Initial studies showed that insurgents hit by it suffered larger exit wounds, although information was limited.

Archived from the original on 25 September Though the MA1 is more shanag to produce, its performance is considered to compensate. The Pentagon legally cleared the rounds for Marine use in late January. InNATO decided to standardize a second rifle caliber. Remington created a larger cartridge called the. The makeup and design of the bullet affected accuracy. All sizes in millimeters mm. The cartridge was also designed to reduce pollution by controlling lead emissions.

Retrieved 13 September For general issue, the U. Archived copy as title Articles with dead external links from June Articles with permanently dead external links All articles with unsourced statements Syanag with unsourced statements from March All articles with failed verification Articles with failed verification from August Articles with unsourced statements from January Articles containing potentially dated statements from All articles containing potentially dated statements Articles containing potentially dated statements from The casings and chambers.

The Gw Pat 90 round firing a 4.