[QUOTE=avantman42;10797The only difference between the British SLR and the Argentinian FAL, as you've mentioned, is that the SLR didn't do full-auto. At least, not officially: I've heard from several ex-soldiers that inserting a match in the correct place made it fire full-auto.[/QUOTE]
It fired full auto until the magazine ran out, 1 shot hit not much.
The safety catch on the SLR could be "adapted" by removing the bent of metal that was put there to stop the selector switching to the full auto setting. Or at a push the FAL catch could fit, but why would anyone want to do it, unless firing blanks, is the question. The SLR barrel was not as heavy as the FN barrel, so it wouldn't take too many 20 round bursts, before accuracy would suffer. Plus the gas system would foul very quickly.
There is a reason for the GPMG being in service, almost the personal weapon of the Paras in the Falklands. In my opinion, the best General purpose 7.62x51mm machine gun.................................In the world.