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Accuracy International Mk 13 (SOCOM)

Bolt-Action Sniper Rifle [ 2017 ]

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 | Last Edited: 06/04/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

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.©MilitaryFactory.com
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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.



Service Year

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United States


Bolt-Action Sniper Rifle

Accuracy International USA - USA
(View other Arms-Related Manufacturers)
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(OPERATORS list includes past, present, and future operators when applicable)
Accuracy / Precision
Long-range accuracy / precision capable; suitable for sniping, particularly when equipped with sighting aids.
Special Forces
Qualities of this weapon have shown its value to Special Forces elements requiring a versatile, reliable solution for the rigors of special assignments.
This weapon is either inherently silent/suppressed or can be made so through special assembly added at the muzzle, specialized subsonic ammunition or a combination of both.

Overall Length
1,205 mm
47.44 in
Barrel Length
673 mm
26.50 in
Empty Wgt
11.40 lb
5.17 kg



Manually-Actuated, Bolt-Action System

Manually-actuated process of managing the bolt lever to eject spent cartridge case, clearing the breech, to introduce fresh catridge into the chamber.
(Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information)


.300 Winchester Magnum

Sample Visuals**

Graphical image of a .300 Winchester Magnum rifle cartridge
Rounds / Feed

5-Round Detachable magazine.
Cartridge relative size chart
*May not represent an exhuastive list; calibers are model-specific dependent, always consult official manufacturer sources.
**Graphics not to actual size; not all cartridges may be represented visually; graphics intended for general reference only.
Max Eff.Range
3,940 ft
(1,201 m | 1,313 yd)

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

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