in almost every game (just like in real life) you can full-auto the AS VAL (ISSR A) as seen in the video below:
right now, the ISSR-A is in this weird spot of being an assault rifle with 50m range, but slow firing 4 shot killing kind of marksman weapon knockoff...
we already have the ISSR-B variant that functions as a 4 shot killing sniper.
so I'd suggest changing the ISSR-A to something like in the video above.
fast firing with a small magazine a