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Firearm modification is commonly done in order to enhance various aspects of the performance of a firearm. Reasons for these modifications can range from cosmetic to functional, and can be simple operations that the owner can perform, or complex operations requiring the services of a gunsmith. ==Modifications performed== Common modifications include: * Cosmetic and ergonomic modifications * * Replacement or alteration of grips or stocks * * Changing of sights, such as the adjustable iron sights or a telescopic sight〔 * * Adding or removing weight to ease carrying, alter balance, or help moderate recoil〔 * * Metal engraving or custom woodwork〔 * * Checkering or stippling wood or metal〔 * * Altering the metal finish, using techniques such as blueing, electroplating, or parkerizing〔 * * Use of a shorter barrel to reduce size and weight, or a longer barrel to increase velocity * Caliber conversions * * Rechambering or rebarreling for a new caliber, such as conversions made to chamber a wildcat cartridge * * Use of a caliber conversion sleeve or other readily removable insert to fire a smaller, less expensive cartrdige * Operating mechanism conversions * * Muzzleloading or paper cartridge to metallic cartridge conversions, such as the Allin conversion or Lund conversion * * Conversion from fully automatic or select fire to semiautomatic only or manual operation, or vice versa * * Short recoil to blowback conversions, used in various .22 Long Rifle conversions, such as the Colt Ace and J. A. Ceiner conversion kits.〔(【引用サイトリンク】title=Jonathan Arthur Ciener, Inc. .22LR Conversions )〕 * * Conversion from handgun to carbine or rifle〔(【引用サイトリンク】title=Carbine conversion kits from Mec-Tec )〕 * * Addition of a rifled barrel to a shotgun to allow it to better fire shotgun slugs *Accurizing *Sporterizing Some commonly customized firearms include the Ruger 10/22 carbine, the M1911 pistol, and the AR-15 rifle, all of which have large numbers of aftermarket parts suppliers. Shooting disciplines such as bullseye pistol and benchrest shooting also rely extensively on custom-built and modified firearms to achieve top accuracy. 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「Firearm modification」の詳細全文を読む スポンサード リンク
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