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Grizzly (.22-caliber rifle)
The Grizzly and the Grizzly 2.0 is a 3D printed .22-caliber rifle created around August 2013.〔(3D printed plastic rifle successfully fires 14 rounds - as gun advocates predict it will force changes in the law ), DailyMail, 9 August 2013. ((archive ))〕 It was created using a Stratasys Dimension 1200es printer.〔 It was created by a Canadian only known by the pseudo name "Matthew" and told The Verge that he is in his late 20s, and his main job is making tools for the construction industry.〔(First 3-D printed rifle fires bullet, then breaks ), NBC News, July 26, 2013. ((archive ))〕〔(World's first 3D-printed rifle gets update, fires 14 shots ), The Verge, August 4, 2013.((archive ))〕
The original Grizzly fired 1 shot then broke〔 Grizzly 2.0 fired 14 bullets before getting damaged due to the strain.〔 According to the Dailymail, the Grizzly 2.0 performed so well that the inventor "Matthew" was able to put it to his shoulder and shot off three rounds with the rifle pressed against his cheek without hurting him.〔
==Specification==
The “Grizzly 2.0″ has 50 percent larger barrel with a rifled bore, a larger receiver and new hammer.〔(3D-Printed Rifle Shoots 14 Rounds Before Breaking ), The Blaze, August 5, 2013. ((archive ))〕 In a video posted online by the creator, the Grizzly seemed to have successfully fired a Winchester Dynapoint .22-caliber bullet, like the Liberator .380. The only metal in the Grizzly is a 1-inch roofing nail plus whatever metel is in the cartridge.〔(World's Possibly First 3D-Printed Rifle Is Fired on YouTube ), Mashable, August 2013. ((archive ))〕
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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