I wont hold my breath for a newer model of the SAR21. Seeing how
not every unit even uses them, the priority is to get all regiments
all using them first. Of course, if I had it my way, the teeth arms
arms like Infantry, Guards and CDO would get newer versions first,
and simply hand over the older model to the support arms... but
nope, it aint gonna happen that way.
For an example of how fast newer versions are fielded, just look at
the Ultimax 100.
Oh and CRF = Commando Regular Force
I cant say more about them, sorry.