Well, I got it done! Got everything assembled and lined up and used one of the aluminum front sight drifts from Dawson. I used it on the bottom notch so if it marred the aluminum collar it wouldn't be so noticeable. I guess the drift is a softer aluminum than the lock ring, as it worked just fine and didn't leave any marks. I also put a couple of drops of the purple Locktite on the collar threads that YHM sent to use on the front endcap. I don't think the collar will go anywhere. Thanks for the responses guys! <thumbsup>