B Sqare M 14 mount
I presently have a B square mount for the m 14. Its made out of very thick aluminum and only has one contact point. It screws on the side of the receiver and touches on the front with a allen screw. It also has some allen screws on the side of the mount also so to adjust the angle of the mount on the receiver.
I'm presently trying to acquire a Smith Enterprise or a Sadlak mount. The forementioned mount, tends to get loose so you have to use some locktite on the side screw. Once its mounted correctly, you can get some not too bad accuracy out of it. I've gotten groupings of 4 inches and smaller; depending on the ammo and how good I shot that day.
Its not a third generation mount, but its a affordable and easy to find mount.
Dave