SA80 (L85 Family)

The British SA80 family, from the EM-2 and Enfield's 4.85 mm rifle through the troubled L85A1 and H&K's A2 rebuild to the A3, with the mechanism, maintenance, identification, and the US semi-automatic SA80s of 2026.

Firearms

SA80 (L85 Family) · Deep Dive

SA80 (L85 Family)

Heckler & Koch's famous rebuild replaced almost every part except the receiver: the body stamped 'HK A2' is a reused, unmodified A1 body.

The British SA80 family, from the EM-2 and Enfield's 4.85 mm rifle through the troubled L85A1 and H&K's A2 rebuild to the A3, with the mechanism, maintenance, identification, and the US semi-automatic SA80s of 2026.

Photo: DM-SD-98-00176 by US Department of Defense · Public domain

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    Volumes

    1. Vol 1 From the EM-2 to Enfield's 4.85 mm Rifle The .280 calibre and its reversal, the SLR years, the 1970 study, the AR-18 conversions, the 4.85 × 49 mm cartridge, and the XL60 series that lost the NATO trials
    2. Vol 2 The L85A1 and Its Troubles The XL70 and XL80 rifles, acceptance in 1984, the closure of Enfield, the Gulf War, and fifteen years of reliability problems as Parliament recorded them
    3. Vol 3 The H&K Rebuild: A2, L22 and A3 What Heckler & Koch changed part by part, what it cost by four official counts, Afghanistan 2002, the L22 carbine, the A3 mid-life improvement, and Project GRAYBURN
    4. Vol 4 The Family and How to Tell Them Apart L85A1, A2 and A3 rifles, the L86 Light Support Weapon, the L22 carbine, the L98 cadet rifles and the drill rifle, with comparison plates, a tell-them-apart table and the markings
    5. Vol 5 How It Works The bullpup layout, the short-stroke gas system with its moving cylinder, the rotating bolt in a welded barrel extension, three recoil rods, the long trigger bar and the safety sear, described in the makers' own words
    6. Vol 6 Field Strip, Maintenance and Repair The maker's 1985 drills for loading, unloading, stripping and assembly; the cleaning regime and its 200-round gas-parts rule; immediate action and the gas stoppage; what the armourer did; and what an owner of any SA80-pattern rifle should take from it
    7. Vol 7 Accuracy and Ammunition From 4.85 mm to the L15 ball round, the 1-in-175 mm twist, muzzle velocities, the maker's zeroing standard and correct zero position, the marksmanship claims, the LSW's split groups, and what a US owner should feed an SA80-pattern rifle
    8. Vol 8 Sights, Accessories and Fittings The SUSAT and its pillar pointer, the carrying-handle iron sight, the ACOG and Elcan day sights, the A3's bracket, underslung grenade launchers, laser light modules, rails, magazines, the bayonet and its scabbard
    9. Vol 9 Owning, Buying and Building One in the US Why no service SA80 is in American civilian hands, the semi-automatic SA80s that do exist, the AR-based lookalikes and airsoft replicas, federal and Michigan law, section 922(r), and two semi-automatic builds worked through against a real home lab: an AKB-23 lookalike and a shop-made SA80-pattern body, with three ways to join it