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The .22 long rifle, also known as the .22 LR or 5.7×15mmR, [4] [5] is a long-established variety of .22 caliber rimfire ammunition originating from the United States. It is used in a wide range of firearms including rifles , pistols , revolvers , and submachine guns .
The concept of this weapon is to overcome the deficiencies of the low power rimfire cartridge by rapidly delivering a large number of projectiles. The weapon, therefore, relies on the .22 Long Rifle's very low recoil and a high rate of fire of 1,200-1,600 RPM.
Pages in category ".22 LR rifles" The following 42 pages are in this category, out of 42 total. ... This page was last edited on 26 June 2016, at 22:39 (UTC).
.22 LR rifles (1 C, 42 P).22 LR submachine guns (5 P) Pages in category ".22 LR firearms" The following 19 pages are in this category, out of 19 total.
Toepler's original system [2] was designed to detect schlieren in glass used to make lenses. In the conventional schlieren system, [3] a point source is used to illuminate the test section containing the schliere. An image of this light is formed using a converging lens (also called a schlieren lens).
.22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.
English: This is high-speed schlieren imaging of a bullet in free flight. It was captured with a Phantom v12.1 by Nathan Boor of Aimed Research. This is also an example of a knife edge cut-off, single pass schlieren system. One optical element was close to the point of focus and the lines in the glass can be seen.
The AR-7 uses a blowback semi-automatic action in .22 Long Rifle but retains the AR-5/MA-1 feature of storing the disassembled parts within the hollow stock, which is filled with plastic foam and capable of floating. [4] [5] Like the bolt-action AR-5, the AR-7 was designed as a survival rifle for foraging small game for food. The AR-7 is ...