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It appears that this round can drastically improve the performance of any AR-15 weapon chambered to .223/5.56 mm. Superior accuracy, wounding capacity, stopping power and range have made this the preferred round of many special forces operators, and highly desirable as a replacement for the older, Belgian-designed 5.56×45mm SS109/M855 NATO round.
In the end, the Belgian 5.56×45mm SS109 round was chosen (STANAG 4172) in October 1980. [181] The SS109 round was based on the U.S. cartridge but included a new stronger, heavier, 62-grain bullet design, with better long-range performance and improved penetration (specifically, to consistently penetrate the side of a steel helmet at 600 meters ...
The Howa Type 89 assault rifle (89式小銃, hachi-kyū-shiki-shōjū), referred to as the Type 89 5.56 mm rifle (89式5.56mm小銃, hachi-kyū-shiki-go-ten-go-roku-miri-shōjū), [5] [6] is a Japanese assault rifle used by the Japan Self-Defense Forces, [6] the Japan Coast Guard's Special Security Team units, [6] and the Special Assault Team. [7]
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The Beretta AR70/223 in its current state could not be submitted for the trials. In October 1980, NATO had chosen the Belgian 62 gr SS109 cartridge as the new standard for the 5.56×45mm round. Because the AR70/223 still ran on the older 5.56mm M193 cartridge, the platform required changes to accommodate the newly standardized SS109 cartridge.
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]
Each M27 link consists of a single piece of metal curved into two partial cylinders, into which adjacent rounds slide. Like the M13 link, the M27 link is a push-through design.
Each weapon and component considered vulnerable to the effects of a rapid change in pressure, for example barrels, breech blocks and bolts, will be tested by firing one dry round at a corrected minimum of 25% over-pressure and one oiled round at a corrected minimum of 25% over-pressure. 25% over-pressure means 25% in excess of the Service ...