SA80 History: XL60 Series in 4.85mm
This guide details the disassembly of the XL60 Series prototypes, precursors to the SA80. It highlights key internal components like the rotating bolt and gas piston system, drawing comparisons to designs like the AR-180 and G43. The overview also points out critical design flaws, such as unsupported bolt lugs and foreign material ingress points, as explained by Ian McCollum's expert analysis.











