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The Heckler & Koch HK416 (HK M4) is an assault rifle/carbine designed and manufactured by Heckler & Koch. It is based on the AR-15 platform, and was originally conceived as an improvement based on the Colt M4 carbine family issued to the U.S. military, with the notable inclusion of an HK-proprietary short-stroke gas piston system derived from the Heckler & Koch G36. The HK416 was used to kill Osama Bin Laden.〔http://www.popularmechanics.com/military/weapons/g536/face-time-with-the-hk416-the-gun-that-killed-bin-laden/?〕〔http://www.usnews.com/news/washington-whispers/articles/2011/05/11/the-gun-that-killed-osama-bin-laden-revealed〕 ==History== The United States Army's Delta Force, at the request of R&D NCO Larry Vickers, collaborated with the German arms maker Heckler & Koch to develop the new carbine in the early 1990s. During development, Heckler & Koch capitalized on experience gained developing the ''Bundeswehr's'' Heckler & Koch G36 assault rifle, the U.S. Army's XM8 rifle project (canceled in 2005) and the modernization of the British Armed Forces SA80 small arms family. The project was originally called the Heckler & Koch M4, but this was changed in response to a trademark infringement suit filed by Colt Defense. Delta Force replaced its M4s with the HK416 in 2004, after tests revealed that the piston operating system significantly reduces malfunctions while increasing the life of parts. The HK416 has been tested by the United States military and is in use with some law enforcement agencies and special operations units. It has also been adopted as the standard rifle of the Norwegian Armed Forces. A modified variant underwent testing by the United States Marine Corps as the M27 Infantry Automatic Rifle. After the Marine Corps Operational Test & Evaluation Activity supervised a round of testing at MCAGCC Twentynine Palms, Fort McCoy, and Camp Shelby (for dust, cold-weather, and hot-weather conditions, respectively). As of March 2012, fielding of 452 IARs has been completed of 4,748 ordered. Five infantry battalions; 1st Light Armored Reconnaissance Battalion and 2nd Battalion, 4th Marines, out of Camp Pendleton, CA, First Battalion, 3rd Marines, out of Marine Corps Base HI, 1st Battalion, 9th Marines, out of Camp Lejeune, NC; and 1st Battalion, 25th Marines, out of Fort Devens, MA have deployed the weapon. 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「Heckler & Koch HK416」の詳細全文を読む スポンサード リンク
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