Sorry Late Post ! Just A Classic AKM Flat Underfolder with Trunnion Holes already drilled of AK Builder !Take your time when riveting.
What are you using receiver style? Flat? Complete?
I like building them a lot.
Going Good ! I Finished Bending the Flat and Heat Treated the Rails/Rivet Holes Last Night easy as pie. Now the real test begins with Spot Welding the Rails hopefully I wont F**K up the Head space as I know it needs to be Perfect !How'd it go? I've wanted to do one myself just haven't invested in the tools. Needing the shop press is kind of prohibitive.