FN SCAR Mk17 7.62x51mm due to the buttstock design, mag release, and magazine size.

Or simply the SCAR-H for most people.

Also,looks like an HK on her hip (maybe a USP?)

So does that caliber make this weapon a battle rifle instead of an assault rifle?

hungkok2007 said:
So does that caliber make this weapon a battle rifle instead of an assault rifle?

By definition, yes.

I want to see this Sakuya vs. Homerun.