I have burris signature z rings on my SB2 with a Swift 4-12X40 scope. I had to take a few thousants off the top of the hammer spur and edge of the hammer extension to keep it from hitting the eye bell on the scope. The Signature rings with the inserts are slightly higher than the regular z rings I think, mine are medium, so if you are not wanting to do any work on the hammer you may need to go to high burris rings. Probably all depends on the eye bell on the scope you have. Larry