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Accuracy International Mk 13 (SOCOM)

Bolt-Action Sniper Rifle

For the USMC, the potent Accuracy International Mk 13 SOCOM bolt-action sniper system is replacing the ages-old Remington M40.
Authored By: Staff Writer | Edited: 6/4/2019
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Year: 2017
Manufacturer(s): Accuracy International USA - USA
Roles: Clandestine Operations; Long-Range Precision;
Action: Manually-Actuated, Bolt-Action System
Caliber(s): .300 Winchester Magnum
Sights: Optics.
Overall Length: 1,205 mm (47.44 in)
Barrel Length: 673 mm (26.50 in)
Weight (Unloaded): 11.40 lb (5.17 kg)
Effective Range: 3,940 ft (1,201 m; 1,313 yd)
Operators: United States
The storied Remington M40 bolt-action sniper rifle has been in United States Marine Corps service for decades since adoption in 1966. However, the modern battlefield requires a modern solution and the service has relatively recently adopted a successor in the form of the British-originated Accuracy International "Arctic Warfare" as the "Mk 13" (under the Accuracy International USA brand label). The Mk 13 serves United States Special Operations COMmand (U.S. SOCOM) and is a proven commodity for accurate, ranged work against enemy elements. The decision for the USMC was made in April of 2018 while the line is already in service with the United States Navy SEALs special forces group.

The Mk 13 is chambered for the man-stopping .300 Winchester Magnum rifle cartridge firing from a five-round detachable box magazine and sports a long-action, manually-operated bolt-action system. The barrel can integrate a suppressor for clandestine work against unsuspecting targets. At the forend is a three-point Picatinny rail system for the mounting of accessories while the top of the receiver showcases the traditional optics mounting area. In this way, the operator can affixed a folding bipod and any other desired attachment to fully customize his/her weapon for field work. To this is added an adjustable shoulder stock, cheekpiece, and trigger pull making the Mk 13 a complete solution for the most discerning of military shooters.

Overall weight of the system is 5.17kg with an overall length of 1,205mm and the barrel measuring 673mm long. Effective range is out to nearly 4,000 yards.

Program Updates

August 2018 - The USMC formally announced adoption of the Mk 13 rifle family to succeed the Vietnam War-era Remington M40 rifles. Fielding is set to begin before late 2018 and into 2019.

Variants / Models

• Mk 13 - Base Series Designation.
• Mk 13 Mod 5
• Mk 13 Mod 7
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