https://specialmilitaryforces.blogspot.com/2018/01/the-m2010-enhanced-sniper-rifle-esr.html
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. 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 for up to 3,600 weapons. The Army had anticipated fielding upgraded weapons to deployed U.S. Army Snipers near the end of December 2010,but later expected fielding would happen in January 2011.
The M2010 system differs from the prior M24 Sniper Weapon System in that it fires .300 Winchester Magnum (7.62×67mm) ammunition to provide approximately 50 percent additional effective range relative to the M24's 7.62×51mm 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 3.34 inches (84.84 mm) in overall length.
The U.S. Army developed the system so that the additional effective range would help snipers in engagements in mountainous and desert terrain in which the War in Afghanistan was being fought.The general penalties for using bigger, more powerful magnum rifle ammunition compared to smaller, standard rifle cartridges are increases in recoil, jump, flash, weight, and barrel wear.
DESIGN DETAILS:- The M2010 Enhanced Sniper Rifle differs from 7.62×51mm NATO chambered M24 Sniper Weapon System in that M2010 sniper weapons are:
Chambered to .300 Winchester Magnum.
Barreled to a 24 in (610 mm) 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 right 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 and accessory cables via routing channels.
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. The 10 in (254 mm) Titan-QD Fast-Attach suppressor eliminates 98 percent of muzzle flash, 60 percent of recoil, and reduces sound by 32 decibels.
Fitted with a Leupold Mark 4 6.5–20×50mm ER/T M5A2 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, fielded with the AN/PVS-29 or AN/PVS-30 Clip-on Sniper Night Sight.
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/0.3 mil (less than a 2-inch shot group at 200 yards/ 6 cm at 200 meters) before being released for fielding