I think someone asked me a while back to post pics of my type 81M. Well here they are. If anyone wants some extra photos I’d be happy to send them. Mine has an underfolder stock but about 1/2 of the M’s are fixed stocked variants.
Overview
Disassembled
Bolt (very similar to an ak bolt)
The gas system is adjusted with a cartridge
Chinese type 56 ak grip I modified to fit
The original grip
From what I understand the fire control group is very ak inspired
Chrome lined barrel
Pressed and pinned barrel
Mine is a bit of a mix and match of parts. The bolt carrier is from a type 81SR, the grip is from an ak, 1/2 the mags are modified ak mags, and the recoil spring assembly is from an SR too.