Most come with instructions. They can only go in one spot so it's kinda hard to dick it up. Field strip rifle and remove trigger group. Lay out holes (I do front one first---tight fit), install front screw, make sure mt is parallel with bore, drill and ream second hole. If everything is cool install with green loctite. See that wasn't hard.If you have it done should be about 1 hr labor---no more than 2! Also make sure the rail and the scope are compatible---there are different ones!

I worked on a neighbor's SLR95 for a Kobra sight. The metal on those damn guns is so hard you have to use a cobalt drill bit. The titanium carbide bits won't do squat.

If you get the rail from Tantal, do not follow the install measurements for the height (verticle, horizontal is fine) of the rear mounting screw. The number is wrong and the rear of the mount will end up too high. Another thing is to mount the rail as low as possible.