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The M2010 Enhanced Sniper Rifle (ESR), formerly known as the XM2010 and M24 Reconfigured Sniper Weapon System, is a sniper rifle developed by PEO Soldier for the United States Army.〔(【引用サイトリンク】url=https://peosoldier.army.mil/newpeo/Equipment/Temp.asp?id=IW_XM2010 )〕 It is derived from the M24 Sniper Weapon System and replaced the existing M24s. After winning a competitive bidding process, Remington was awarded the production contract. Up to 3,600 weapons can be procured. The Army had anticipated fielding upgraded weapons to deployed U.S. Army Snipers near the end of December 2010. Later, project manager for Soldier weapons Colonel Douglas Tamilio said the XM2010 expected fielding would happen in January 2011.〔 The M2010 system differs from the prior M24 Sniper Weapon System in that the M2010 fires .300 Winchester Magnum ammunition to provide approximately 50 percent additional effective range relative to the M24's 7.62x51mm NATO. This chambering to dimensionally larger cartridges is possible because the M24 Sniper Weapon System was designed to use the "long action" bolt version of the Remington 700 receiver for cartridges up to in overall length. The U.S. Army hopes that the additional effective range helps their snipers in engagements in mountainous and desert terrain in which the War in Afghanistan is fought.〔(【引用サイトリンク】title=New rifles give Army snipers in Afghanistan needed range - USATODAY.com )〕 The general penalties for using bigger, more powerful magnum rifle ammunition compared to smaller, non-magnum standard rifle cartridges are increases in recoil, jump, flash, weight, and barrel wear. ==Design== The M2010 Enhanced Sniper Rifle differs from 7.62×51mm NATO chambered M24 Sniper Weapon System in that M2010 sniper weapons are:〔(【引用サイトリンク】title=Remington Wins M24E1 Army Sniper Rifle Contract « Daily Bulletin )〕〔(Sniper's Spring XM2010s Unleashed in Afghanistan by PEO Soldier, “Infantry Bugler” magazine, September 2011 )〕 * Chambered to .300 Winchester Magnum. * Barreled to a long, 1 in 10 inch (254 mm) twist rate (using Obermeyer 5-R rifling) hammer-forged free floating barrel. * Fitted with a new chassis (stock) assembly that maximizes the amount of physical adjustments for the sniper to provide a better user customized fit. The chassis has a folding buttstock that shortens the system for easier transport and better concealment during movement and accommodates the mounting of accessories via removable Mil Std 1913 Picatinny Rails. * Fitted with a five-round detachable box magazine. * Fitted with a quick-attachable/detachable Advanced Armament Corporation sound suppressor with muzzle brake to reduce recoil and jump and audible and visible signature with an available thermal sleeve that reduces mirage effect on heated suppressors.〔(Advanced Armament Corp. 240-SD Fast-Attach 7.62mm Silencer )〕 The Titan-QD Fast-Attach suppressor eliminates 98 percent of muzzle flash, 60 percent of recoil, and reduces sound by 32 decibels.〔(Army's XM2010 sniper rifle gets full fielding ) - Armytimes.com, 25 April 2011〕 * Fitted with a Leupold Mark 4 6.5–20×50mm ER/T M5 Front Focal variable power telescopic sight featuring a 34 mm tube diameter, first focal plane Horus Vision H-58 grid system range estimation reticle and Bullet Drop Compensation,〔(【引用サイトリンク】title=New 34mm-tube Mark 4 Scope with Horus Reticle for M24E1 « Daily Bulletin )〕〔(【引用サイトリンク】title=Leupold Optics Mark 4 ER/T 6.5-20x50mm (30mm) M5 Front Focal - )〕 fielded with the AN/PVS-29 or AN/PVS-30 Clip-on Sniper Night Sight.〔(【引用サイトリンク】title=Clip-on Sniper Night Sight (Clip-on SNS), AN/PVS-29 )〕〔(【引用サイトリンク】title=Equipment Piece of the Week: Clip-on Sniper Night Sight (Clip-on SNS), AN/PVS-30 )〕 * The application of advanced corrosion resistant coatings throughout the system. According to Remington Arms each rifle is tested to meet (and typically exceeds) the requirement to fire ≤ 1 MOA/0.28 mrad (less than a 2-inch shot group at 200 yards) before being released for fielding.〔(XM2010 Enhanced Sniper Rifle / M2010 ESR (USA) )〕 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「M2010 Enhanced Sniper Rifle」の詳細全文を読む スポンサード リンク
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