hookeye:
The JP adapters look interesting but I'm not so sure I like the idea of them being made of delrin which is a resin.
I had to laugh at this: "They also eliminate the need for unsightly Picatinny scope rails that mar the dovetail and the receiver top and destroy the natural lines of a quality rifle."
A one piece rail is exactly what I prefer.
All the DIP bases are Picatinny and I've heard good things about them - and I just might end up with one if I can't find something similar in a Weaver style.
