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Kel-Tec PMR-30
The PMR-30 is a full-size semi-automatic pistol being manufactured by Kel-Tec〔(【引用サイトリンク】title=Kel Tec PMR-30 Pistol )〕 and was made available in 2011. It has a single action trigger pull of and a manual safety device.〔 It is chambered in .22 Magnum (AKA .22 WMR) and the factory shipped double-stack magazine has a capacity of 30 rounds.〔 The PMR-30 uses fixed fiber optic open sights.〔http://www.officer.com/article/10264512/kel-tec-pmr30-the-worlds-most-coveted-rimfire〕 The slide is also pre-drilled to allow for the mounting of various red-dot sights with the purchase of appropriate mounting plates from the manufacturer. It has a European style magazine release.〔
Much polymer is used in the firearm to save on weight and cost, with a steel slide and barrel and aluminum internal grip frame.〔
==Design==
Since its initial market introduction, the PMR-30 has undergone several improvements due to problems with the early available design. The twist rate on the barrel rifling was increased to 1:11 to better stabilize bullets and reduce key-holing.〔(【引用サイトリンク】url=http://www.keltecweapons.com/news/pmr-30-status-update-v )〕 A stronger, lightly textured polymer is now used for the frame. This eliminates drooping of the frame that created a large gap previously seen between the front of the frame and the barrel. This also gives the frame a less shiny appearance, and a less slick feel in the hand. More metal was added as reinforcement at the breech to completely cover the rim of a loaded cartridge, presumably for increased user safety in the event of a cartridge case separation.〔(【引用サイトリンク】url=http://www.thektog.org/forum/f90/pmr-30-upgrades-212591/ )〕 Additional improvements to the newer design include screws that may be loosened to adjust the front sight for windage, and ".22 WMR" stamped on the slide.
Kel-Tec also offers an extended 5" threaded barrel for the PMR-30 with an aluminum flash-hider to reduce the high amount of muzzle flash produced by escaping gases.〔(【引用サイトリンク】url=http://www.keltecweapons.com/product/pmr-30-threaded-barrel-with-flash-reducer/ )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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