I shot about 60+ rounds (iron sights) with 4 types of ammo. Saudi MOI ammo (looks like its made by Norinco) averaged 3.5 moa
Norinco late 90's copperwash was 3.9" ; MFS was a horrible 6.1" ; Czech surplus 4.5" average.
All FMJ's.
Tough shooting at times as my glasses kept fogging up in -15 weather.
At 50 yds (2 groups only), I got 1.2 and .66" of a group (3 shots only). So, just by extrapolation, it looks like this could be a 2-2.5 moa-ish rifle.
I think with an optic, subtract about 3/4 moa from the above. SP or HP's usually shoot a bit better, but I have none available to test
I'm looking into mounting a siderail--and it looks very doable so far--except the rails that I have in my possession will need the lower rears milled away to make room for the Type 81 safety to clear.