I have a set of 1 inch TPS low rings, but they mount the scope too low for my the AR I just put together. I need a set of 1 inch high rings similar to the TPS,R rings that use 4 screws to secure the upper and lower sections. I have both the Leupold and TPS tactical rings because they work great, and I have never had any problem with either kind coming loose, or giving me any other kind of problem, and I do put the gear through hard use. I have other parts I can trade besides the rings: rifle length ventilated tube fore end for an AR15, upper receiver with the ejection port cover on it, misc little parts for an AR lower and some for the upper. I have quite a few of the little springs and detents that usually get eaten by the shop floor... Used but serviceable is certainly OK. As long as they work properly, I can handle scuffed up. Scuffed up is how they will look after 2 or 3 trips to the matches I go to. Milwaukie, OR area.