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  • Remington M40 Bolt-Action Sniper Rifle

    The Remington M40 is a heavy barrel, bolt-action 7.62x51mm sniper rifle in service with the United States Marine Corps.

     Updated: 5/17/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    Long-time gun maker Remington introduced their bolt-action "Model 700" rifle series in 1962 to the American public and police forces. It was this rifle that went on to form the basis of the US Marine Corps (USMC) standardized sniper weapon - the "M40" during the Vietnam War. These modified versions were "militarized" by USMC specialists out of the Quantico armory and formally adopted for service in 1966. Several changes throughout her production life yielded a handful of variants as described below - all changes making for a more robust and adaptable battlefield system. Amazingly, the original Model 700 is still in production today while the USMC M40 is still in service - having seen published action in the Vietnam War, Lebanon, Grenada, the 1991 Gulf War, the 2001 Invasion of Afghanistan and the 2003 Invasion of Iraq.

    The original M40 production mark was simply designated as the "M40". These were identified by their single-piece, all-wooded stocks and standard Redfield 3-9x scopes mounted over the receiver. After warping issues of the wooden stocks became apparent, the "M40A1" mark was introduced which featured the McMillan A1 fiberglass stock and a stainless steel barrel. The Redfield scopes were also dropped and replaced by Unertl types. The "M40A3" appeared in 2001 with a new McMillan Tactical A4 series fiberglass stock and a switch to Schmidt & Bender 3-12x50 Police Marksman II LP scopes with their illuminated reticles. A Schneider Match Grade SS #7 barrel was also introduced and other changes to this mark drove the weapon's overall weight up by approximately 2lbs. These rifles appeared in time to participate in the American invasion of Afghanistan prompted by the events of 9/11 and have been used extensively since. In 2009 there came the latest M40 incarnation - the "M40A5" - which introduced support for the AN/PVS-22 series night vision scopes and detachable box magazines (as opposed to the original's integral box method).

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    Remington M40 Technical Specifications

    Service Year: 1966
    Type: Bolt-Action Sniper Rifle
    National Origin: United States
    Manufacturer(s): Marine Corps Marksmanship Training Unit - Quantico, VA USA

    Design (Internal, Dimensions and Weights)

    Firing Action: Bolt-Action; Rotating Bolt
    Available Caliber(s): 7.62 x 51mm NATO (.308 Winchester)
    Ammunition Count / Feed: 5-round integral box magazine . 5-round detachable box magazine (M40A5)
    Overall Length: 1,117 mm (43.98 inches)
    Barrel Length: 610 mm (24.02 inches)
    Weight (Empty): 14.33 lb (6.50 kg)
    Sighting Assist: Optics Only


    Muzzle Velocity: 2,550 feet/sec (777 m/sec)
    Typical Range: 3,280 feet (1,000 meters; 1,093 yards)

    Global Operators / Customers

    United States

    Model Variants

    Model 700 - Remington Company Model Designation of the original rifle series of 1962.

    Model 40XB - Remington Designation of USMC militarized form.

    M40 - Initial Production Model Series; wooden stocks.

    M40A1 - McMillan fiberglass stock; Hart barrel

    M40A3 - Introduced in 2001; McMillan fiberglass stock; Schneider Match Grade 24" barrel; revised sling; revised bipod; Schmidt & Bender 3-12x50 Police Marksman II LP scope.

    M40A5 - Introduced in 2009; barrel has threaded muzzle for muzle brake or sound suppressor; Badger Ordnance detachable magazine system; forward-set rail mount for night vision sight.