I got the 202 piece Pachmayr torx head scope ring kit. Have used a number of them. In particular, their 8-40 screws have smaller diameter heads and are easy to reduce about .005" and use in Leupold scope bases in place of their 6-48 screws. With heavier scopes, I don't like to use the smaller diameter screws, so I re-tap the receiver for 8-40. I also have gotten tired of the screw slot screws, so a kit of torx head is the way to go. Check amazon, etc. for them.