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The XM7, previously known as the XM5, is the U.S. Army variant of the SIG MCX Spear, a 6.8×51mm (.277 in), gas-operated, magazine-fed assault rifle [1] designed by SIG Sauer for the Next Generation Squad Weapon program in 2022 to replace the M4 carbine.
[2] [3] In the 1980's, the company became legendary in the sniper community for its 10x USMC Sniper scope designed by John Unertl Jr and mounted on the USMC M40A1 and M40A3 in 7.62mm. A 50 caliber version was used on the USMC SASR. [1] [4] [5] John Unertl Jr was adamant about selling "USMC" marked scope only to the Marine Corps.
The M4 carbine barrel is 368 mm (14.5 in) and the XM8 barrel is 317 mm (12.5 in) but the rifles have the same overall length. Although a shorter barrel generally results in lower muzzle velocity, Polygonal rifling partially compensates for the loss of velocity from a shorter barrel. An electronic round counter was proposed for the XM8.
SWAROVSKI OPTIK, headquartered in Absam, Tyrol, Austria is part of the Swarovski group of companies. Founded in 1949, the Austrian company specialises in the development and manufacturing of long-range optical instruments in the premium segment of the market, including binoculars, telescopes (spotting scopes), rifle scopes, range finders and night sight devices.
The M2010 Enhanced Sniper Rifle (ESR), formerly known as the XM2010 and M24 Reconfigured Sniper Weapon System, is a bolt action sniper rifle developed by PEO Soldier for the United States Army. [3] It is derived from and replaced the M24 Sniper Weapon System , and was designed to give snipers longer range in the mountainous and desert terrain ...
AAI continued with the original 5.6×53mm XM110 rounds (or sized in 0,22 by 2.09 inches, while Springfield and Winchester used a new 5.6×44mm (0.22 by 1.73 inches) XM144 cartridge. The H&R design loaded the dart from the XM144 into their own cartridge design. The H&R design was the most advanced.
The standard XM-15 has a forged 7075T6 aircraft-grade aluminum upper and lower receiver. Barrels of XM-15 firearms have a heavy profile and are hard chrome-lined 4150 alloy steel or 416 stainless steel. [2] [4] In Bushmaster's 2016 sales brochure, all new-production XM-15s are stated to be supplied with a 4150 steel barrel. [5]
Bushnell introduced the AR Optics 1-4 scope in 2018. It has a 30mm tube and has an objective lens diameter of 24mm. It has caliber-specific reticles that are illuminated for use in low-light. The AR Optics 1-4 is intended for use with modern sporting rifles. [31]