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Modular Handgun System
The Modular Handgun System (MHS) is a United States Army and United States Air Force competition for a new handgun. The Modular Handgun System is anticipated to be the next U.S. military standard side arm replacing the Beretta M9 pistol. The U.S. Marine Corps is also participating in the program to have input on source selection, but likely will not order the resulting weapon until their current pistols' life-cycles end in the mid-2020s.〔(Marines unveil plan to modernize their small arms arsenal ) - MarineCorpstimes.com, 17 September 2015〕
==Rationale==
The main reason for the program is for the same reason that the M1911A1 was replaced by the M9 previously: the pistols were at the end of their service life and wearing out. All firearms have a finite life cycle. While parts such as the barrel, grips, springs, pins, and others can be replaced, the frame cannot. With use, the frame becomes unserviceable. The M9, in service since the 1980s, is approaching this limit. Examples in service are showing signs of terminal wear, and rather than replacing them with newly built M9s, the Army is opting for a new weapon to address design weaknesses.〔(Outdated Weapons Bring Calls for Speedier Upgrades ) - Nationaldefensemagazine.com, January 2013〕 Vital structural components on the M9 like the barrel, frame, and locking block are prone to breaking, especially on the oldest models. Special Forces use pistols more often and reach the end of the M9's service life relatively quickly, and regular troops are also reaching their handguns' lifecycle end through sheer age. Special Operators have opted for other side arms like the Sig Sauer P226 and P228 (Navy SEALs) as well as the Glock 19 (Army Rangers) and Glock 22 (Delta Force). Conventional soldiers have problems with M9 features, or lack thereof, including no accessory rail or suppressor attachment, an ergonomically poor grip, a heavy trigger pull, poor safety selector placement, and an open slide that lets in debris and can cause a malfunction.〔(Efforts Continue to Replace Army, Air Force Small Arms ) - Nationaldefensemagazine.com, January 2014〕
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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