They haven't selected any optics yet (just like how the C8A4 might not just be a CC MRR, the ones we're seeing which were the same MRRs they had back when 3RCR got J-Pat for other trials aren't the C8A4: just a testing bed for whatever DLR wants to do with them) they just know the optics package they want to go for, albeit for what I've heard about how much they're looking to pay for the LPVOs, CCOs and their corresponding mounts I doubt we'll even see mounts and LPVOs from middle of the road providers like Vortex, hell their budget for testing couldn't even afford a T2 with a stock mount.
The SOR is still not even finished being drafted or approved by any meaningful authority yet.
All that is known is what they want per package:
Full Spectrum Rifle (stupid ass name btw for fighting line units at ~8000 rifles) with LVPO (may or may not have a piggy backed optic), 14.5" barrel and suppressor.
General Service Rifle with CCO (may or may not have a paired magnifier), 11.5" barrel and no suppressor.
I don't understand the
reasonable why behind the barrel length disparity between the two, but apparently everyone that isn't in a combat arms unit is getting a shorty.