PKM PKP 45* RK2 inserted B-50 Handguard

I designed a B-50 with 45 degree RK2 handguard which is strong and usable. Generally, 3d grips are hard to implement on PKM But I modified the m-lock grip to strongly fit B-50

B50 will fit really snugly. You might need to trim a bit for your tolerance due to your printer. Trimming area is shown in picture with red marking.

Update:
I used B-50 around 1 year. I joined 5 milsim events and also tested on every weekend with hard conditions. Every part is fine and still strongly attached to the PKM. If any questions you are welcome to ask :)

For assemble
Threaded m4 inserts and m4 screws are needed.