Why don't you all contact the SASR, and ask if an official article be written about their weapons.
I suspect their auto pistols will probably based on something close to the ole John Moses Browning
short recoil tilting barrel in 9mm.
And their sub guns will mostly likely be based
on a delayed roller blowback in 9mm.
And their long guns will probably be gas operated or delayed roller blowback in 5.56 or 7.62 NATO.
If pulse rifles and inductive weapons were available we would be using them in Afghanistan.
And we would know this, due to the forever smoking carcasses of dead talibanese.
Just like a lot of spec ops, they will use what the mission requires, due to the geo-political climate of the operational area.
Going native is a trademark of spec-op forces.