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Patrone, 5.56×45mm, DM38, Übung ("Practice"): 5.56×45mm 0.5 g (7.70gr) plastic training cartridge, plastic case cartridge colored light blue with a light 7.7-grain plastic bullet designed for short ranges with a dangerous space under 400-metre, produced by Metallwerk Elisenhütte GmbH.
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [1]
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.
It has been adopted by many US allies and the 5.56×45 mm NATO cartridge has become not only the NATO standard but "the standard assault-rifle cartridge in much of the world." [61] It also led to the development of small-caliber high-velocity service rifles by every major army in the world. [62]
5.56 mm (5.56×45mm NATO) Designed to chamber NATO ammunition: 430.0 / (62,366) 537.5 / (77,958) Pressure recorded in NATO design EPVAT Barrel with Kistler 6215 Transducer, [9] [10] HPI GP6 Transducer [11] or by equipment to Commission internationale permanente pour l’épreuve des armes à feu portatives (C.I.P.) requirements 7.62 mm (7.62× ...
The major dimensional difference between the chambers that fire the .223 Remington and the 5.56×45mm NATO is the longer and larger-diameter "freebore" [3] in the 5.56 chamber (0.0566 in (1.44 mm) vs 0.0250 in (0.64 mm) length, 0.2265 in (5.75 mm) vs 0.2240 in (5.69 mm) diameter). Freebore is a short and smooth section of the barrel that is ...
In CIP-regulated countries, every rifle cartridge combination has to be proofed at 125% of this maximum CIP pressure to certify for sale to consumers. [9] This means that .223 Remington chambered arms in CIP-regulated countries are as of 2016 [update] proof tested at 537.50 MPa (77,958 psi) PE piezo pressure.
The Type CQ is an unlicensed Chinese variant of the M16 rifle manufactured by Norinco. [3] According to the Norinco website, the rifle is officially known as CQ 5.56. [4]It can be distinguished from other AR-15 and M16 pattern rifles by its long, revolver-like pistol grip, somewhat rounded handguards, and the unique shape of its stock.