Several people have asked what kind of scope and mount combination I have been running on my PTR-91 since I put up pictures with a previous post. I decided to put a Low Profile Rail Scope Mount on my PTR-91 instead of a STANAG Steel Claw Mount to keep the scope as close to the rifle as possible. I then mounted a MOA Vortex Viper PST 1-4×24 scope in a ADR-X 2 inch Offset Cantilever Ring Mount.
The above combination is rock solid and very accurate. It was rather costly but worth every penny. The scope and mount were an investment and I can use them on different rifles in the future if I ever decide to sell my PTR-91.