The Firestorm update made the FN FAL and the L1A1 effectively identical in statistics.
The L1A1 is based on the British L1A1 SLR (a license built FN FAL). Unlike the version portrayed in Red Crucible: Firestorm, the real-life L1A1 SLR was restricted to semi-automatic only. It was semi-automatic on Red Crucible 2,though