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Accuracy International AX50

United Kingdom (2014)
Picture of Accuracy International AX50 Heavy Caliber Bolt-Action Anti-Material Rifle (AMR)

The Accuracy International AX50 is based in the earlier AW50 product and fires the proven and powerful .50 BMG machine gun cartridge.

Detailing the development and operational history of the Accuracy International AX50 Heavy Caliber Bolt-Action Anti-Material Rifle (AMR).

 Entry last updated on 5/22/2018; Authored by Staff Writer; Content ©

The AX50 is a relatively new entry by the British concern of Accuracy International (AI) into the crowded Anti-Material Rifle (AMR) category. The AMR enjoys a prominent placement in modern army inventories, these weapons tracing their roots to the German Mauser Model 1918 Anti-Tank Rifle (ATR) of World War 1 (1914-1918). World War 2 (1939-1945) and the Cold War (1947-1991) saw a further evolution of the category to the point that the discerning shopper today has his/her choice of brand and, in some cases, caliber size (as large as 20mm!).

The AX50 is part of AI's AX Rifle System product line and is based on the earlier AW50 AMR line. It fires the powerful .50 BMG cartridge, itself based in the famous Browning heavy machine gun (detailed elsewhere on this site), which is proven against enemy infantry targets (even those behind cover) as well as soft-skinned vehicles. Additionally, such a weapon can target individual components of heavier-armored vehicles such as Main Battle Tanks (MBTs), zeroing in on imagers, vision blocks, track links and-the-like.

At the "business end" of the rifle is a triple-chamber muzzle brake intended to reduce the inherently violent recoil of firing such a large round. Its design is also meant to limit the amount of muzzle flash and dust encountered when firing in particular environments. The barrel is free-floating in the design which means that it does not touch any part of the frame of the gun along its length but rather screws directly into the action resulting in higher, more consistent shot accuracy at range.

The firing action relies on a manually-actuated bolt-action system requiring the operator to manage the bolt handle. This handle sits along the right side of the gun's body and is easily accessible by the primary hand for right-handed shooters. The bolt is engineered with six locking lugs and a single-piece extractor for maximum repeat-fire performance under any conditions.

A corrosion-resistant, spring-loaded, steel detachable box magazine inserted ahead of the trigger unit in the usual way. This contains five ready-to-fire .50 BMG cartridges in stacked order. The trigger is a two-stage adjustable design with built-in accidental discharge protection thanks to an oversized sear. It is found ahead of the pistol-grip handle which sports an ergonomic design for a firm hold. The trigger is located well-near the bolt handle for easier access without the shooter having to remove his sight from the scope. A selector switch located just aft of the bolt handle serves as another safety measure in that the mechanism, when actuated, locks the bolt in place and restricts access to the firing pin.

The gun body is rigid construction involving both heavy metals and composites for perfect balance. The shoulder stock is hinged to fold over the right side of the rifle. It contains a buttpad as well as cheekrest and both are fully adjustable by the shooter for some comfort. Folding the shoulder stock over saves some 10" of length - useful when on-the-march or transporting the weapon about. The frame also has forward and rear sling points for using a shoulder strap - again aiding in transport of this large gun. Sections of Picatinny rail are present over the receiver and around the forend allowing various optics, NightVision (NV), and thermal imagers to be fitted as well as traditional tactical accessories (such as a folding bipod).

Overall (empty) weight is 26.5lb with a 27" long barrel fitted. Overall length reaches 1,415mm. Available finishes include Dark Earth, Green, Pale Brown, Elite Sand, and Elite Midnight.

Any available statistics for the Accuracy International AX50 Heavy Caliber Bolt-Action Anti-Material Rifle (AMR) are showcased in the areas immediately below. Categories include basic specifications covering initial year of service, country-of-origin and manufacture(s) involved in bringing the weapon to market. Other qualities showcased are related to physical values such as the internal action, available calibers / chamberings, weight and lengths. Global operators are also presented in A-to-Z format as are any model variants available to the series.
Accuracy International AX50 Specifications
National Flag Graphic
United Kingdom
Year: 2014
Type: Heavy Caliber Bolt-Action Anti-Material Rifle (AMR)
Manufacturer(s): Accuracy International - UK
Supported Mission Types
Frontline Issuance
Special Forces
Close Quarters Battle
Designated Marksman/Sharpshooter
Area Effect/Suppression
Indirect Fire
Airspace Denial
Attachment Weapon
Internal Design, Weight and Dimensions
Firing Action: Manually-Actuated Bolt-Action System
Available Caliber(s): .50 BMG
Ammunition Count / Feed: 5-Round Detachable Box Magazine.
Weight (Empty): 26.57 lb (12.05 kg)
Overall Length: 1,415 mm (55.71 in)
Barrel Length: 685 mm (26.97 in)
Sighting Assist: Support for various optics, imagers, and NightVision (NV) equipment.

Operating Performance
Rate-of-Fire (RoF): 15 rounds-per-minute (rpm)

Operators List
United Kingdom

Model Variants
• AX50 - Base Series Designation.