I have a Noveske lower on one of my AR carbines. Went to add a single point sling adapter to the lower and noticed that the castle nut is staked in the two notches to the end plate. I could not break it loose with my stock wrench so I took a small dremel bit to the staking. I am afraid to go to the depth where I hit the threads but I did manage to dremel what looks like most of the staked metal away. Damn thing still won't budge. Does anyone know whether Noveske uses locktite on the nut in addition to being staked ? I Doesn't appear to be but thought I would ask before I proceed to do more with the dremel. I had never run across one staked before...thanks