Yep, sure looks that way. Pretty stupid way of adjusting lop. My bet is: “I just got this mitre saw from Sears, I have an extra set of comb hardware and I’m really bored. Hey, I’ve got an idea.”To me, it certainly looks like someone is re-purposing adjustable comb hardware.
I suppose by using nylon washers one could adjust LOP and pitch along with cant/cast. However, no vertical adjustment.
Not sure how it would hold up to recoil though