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The P22 is a semi-automatic pistol chambered for .22 LR rimfire ammunition, manufactured by Carl Walther GmbH Sportwaffen. ==Design details== On the exterior, it resembles the Walther P99, but it is somewhat smaller (75% of the P99's size) and its action chambers the rimfire .22 LR cartridge. The most noticeable exterior difference is the P22's slide mounted, thumb operated, ambidextrous safety and its external hammer. The P22 features a cast polymer grip-frame. Its slide and serial numbered frame receiver inserts are made from MIM (Metal Injection Molding) cast zinc alloy, its barrel consists of a rifled steel insert within a steel barrel sleeve, and its internal lockwork and fire-control parts are a combination of MIM cast steel and steel stampings. The P22 can be purchased with a 3.4-inch short barrel (pictured to the right), or with a 5-inch barrel which includes a barrel mounted weight compensator matching the profile of the slide. All P22's except the P22 CA come with an internally threaded barrel which allows the attachment of a sound suppressor or silencer with a separate thread adapter available from Walther. The P22 CA variant specifically excludes this capability to comply with California law. The P22 is offered in many different color variations of its polymer lower receiver. The pistol is available in black, olive drab, grey, carbon fiber and 3 pink versions.〔"(Smith & Wesson’s New Rifle, Pistol and Revolver Models: Company Introduces Expansions to i-Bolt, Pro Series and Walther Lines )". ''Gun Reports'', 09-16-2008. Retrieved 08-14-2009.〕 Additionally, the Walther P22 comes in a variety of camouflage options (e.g. pink "digi-cam" and leaf camo). There is now a new lower receiver finish that looks like Damascus steel. The slide assembly will have either a blue-black applied finish or it will be finished with a nickel/stainless look. Along with the new finish for the lower receiver, the slide also has a new finish option of brushed stainless. The production year is located on the receiver and is visible through the ejection port when the slide is closed. The year is indicated with a two letter code where A=0, B=1, C=2 and so on to I=8 and K=9 ("J" is never used as a year designator). In the image you can see the receiver is labeled with AH indicating a production year of '07. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Walther P22」の詳細全文を読む スポンサード リンク
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