Product Listing -
I need some weld packs for ORF Cetme flats.
This might be what you're looking for: Gun Parts - RTG International Surplus Gun Parts and Militaria has weld packs that include the rear sight mount, semi shelf, and stock pin sleeves:
HK91 Receiver Flat, G3 Receiver Flat, CETME receiver Flat, HK 91 HK-91 Receiver Flat, RTG Gun Parts
Q - What is Bambi?
A - Viable Target
blackwing over at militaryfirearm.com makes the best ones that I have seen. Not sure if he will sell them seperate but you could ping him. His look just what the PTR91's use.