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5.56mm NATO shown alongside other cartridges and a United States $1 bill 5.56×45mm NATO cartridges in a STANAG magazine. 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.
The table below gives a list of firearms that can fire the 5.56×45mm NATO cartridge, first developed and used in the late 1970s for the M16 rifle, which to date, is the most widely produced weapon in this caliber. [1] Not all countries that use weapons chambered in this caliber are in NATO. This table is sortable for every column.
The official name for .223 Remington in the US Army is cartridge 5.56x45mm ball, M193. If a 5.56×45mm NATO cartridge is loaded into a chamber intended to use .223 Remington, the bullet will be in contact with the rifling and the forcing cone is very tight. This generates a much higher pressure than .223 Remington chambers are designed for. [3]
M16 internal piston action system. The M16 is a lightweight, 5.56 mm, air-cooled, gas-operated, magazine -fed assault rifle, with a rotating bolt. The M16's receivers are made of 7075 aluminum alloy, its barrel, bolt, and bolt carrier of steel, and its handguards, pistol grip, and buttstock of plastics.
Bill Wylde of Greenup, Illinois, compared the two cartridges and changed the chamber of the rifle's barrel to a specification he called the .223 Wylde chamber. The chamber is made with the external dimensions and leade angle found in the military 5.56×45mm NATO cartridge and the 0.2240 in (5.69 mm) freebore diameter found in the civilian SAAMI.
The M4 carbine (officially Carbine, Caliber 5.56 mm, M4) is a 5.56×45mm NATO assault rifle developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle. The M4 is extensively used by the US military , with decisions to largely replace the M16 rifle in US Army (starting 2010) and US Marine Corps ...
Test barrel length: 22.75" rifle (higher velocity) and 5.0" pistol (lower velocity) The .22 TCM or 22TCM (.22, Tuason, Craig, Micromagnum) is a proprietary bottle-necked rimless cartridge created from a 5.56mm NATO / 223 Rem parent case. It was developed by custom gunsmith Fred Craig and Martin Tuason, President of Rock Island Armory (RIA ...
The Heckler & Koch HK416 is an assault rifle chambered for the 5.56×45mm NATO cartridge.It is designed and manufactured by the German company Heckler & Koch.. Although the design is based on the AR-15 class of firearm (specifically the Colt M4 carbine family issued to the U.S. military), it uses a proprietary short-stroke gas piston system from Heckler & Koch's earlier G36 family of rifles.