L64/65

Last updated
Enfield Individual Weapon
British Assault Rifles MOD 45162601 (XL64E5 crop).jpg
XL64E5 Individual Weapon
Type Bullpup assault rifle
Place of origin United Kingdom
Service history
In serviceExperimental
Used by British Army [ citation needed ]
WarsSee Conflicts
Production history
Designed1972–74
Manufacturer Royal Small Arms Factory
Produced1976–78
VariantsXL64, XL65, XL70
Specifications
Mass7.2lbs (3.72kg) (unloaded, including SUSAT sight)
Length762 millimetres (30.0 in)
Barrel  length533 millimetres (21.0 in) [1] (with flash suppressor)

Cartridge 4.85×49mm
Caliber 4.85mm
Barrels20.4 in (518 mm) 4 grooves, right-hand twist
Action Gas-operated, Rotating bolt
Muzzle velocity 900 m/s
Feed system20-round detachable box magazine
SightsSUSAT (SUIT)

The L64 (also called the Enfield Individual Weapon) was an intermediate calibre British bullpup layout prototype assault rifle developed in the 1970s. At one time it was known as the 4.85 Individual Weapon, a reference to the calibre of the bullet it fired.

Contents

Development

The British Army had considered bullpup designs with intermediate calibre rounds in the 1950s, and officially adopted one of these as .280 British in 1951 in the EM-2 and Taden gun. However, US intransigence during NATO standardization efforts, and Winston Churchill's interest in standards above all, led to the adoption of the 7.62×51mm NATO round. This was significantly more powerful than the .280, and could not be easily adapted to the existing weapons. Instead, the British and Canadian armies adopted the L1A1 SLR, a licensed version of the FN FAL, itself originally designed for the .280.

During the 1960s the US found that, as the British had suggested, the 7.62 NATO round was far too powerful to be used in a fully automatic rifle. After considerable wrangling, the US Army eventually adopted the M16 rifle, firing the .223 Remington cartridge of much lower power than even the .280. With standardization "broken", the British Army once again started researching lighter rounds in the 1970s. These efforts suggested that a round of similar weight as the M16s, but firing a smaller diameter bullet, would offer the same recoil patterns while having much better penetration and ballistics. The result was the .190-inch (4.85 mm) round fitted in "necked down" but otherwise standard 5.56 mm cartridges from the M16.

The Royal Small Arms Factory developed a rifle to fire the new round. The new L64/65 "Individual Weapon" was outwardly similar to the earlier EM-2, but adopted a firing mechanism very similar to ArmaLite's latest AR-18 design, which was manufactured in Britain under license by the Sterling Armaments Company from 1975 to 1983. The first examples were available in 1972.

By 1976, NATO was ready to standardize on a small calibre round, and testing of the various rounds head-to-head started in 1977. As designed, the British round performed well, but NATO concluded that the Fabrique Nationale's entry based on the 5.56 mm, the "SS-109" gave the "best all-round performance" and was selected.

The L64 pattern was later developed into the SA80 family of weapons, which entered service with the UK in the mid-1980s.

Overview

The L64/65 is a gas operated, 4.85mm calibre bullpup assault rifle. It uses an AR18 type operation with an SVT40 type gas piston. The SUSAT sight is robust and reliable.

See also

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References

  1. "British Enfield SA80 Part 2: XL60 series". armamentresearch.com . 23 November 2018. Retrieved 24 March 2023.

Bibliography