272 loctite is the ticket.  Hence if you need to remove the block, you use a old allen wrench in the head socket to transfer heat to the set screw with a torch, once you smell a sweet smell, transfer to a new allen wrench,  and you will have the block off without stripping the head of the set screws in less than a min.  If some of the loctite transfers between the barrel and the ID of the gas block, a little heat is all that is needed on the block to break that loctite bond down as well.


With rockset, you have to water soak, and that makes the job a waiting game instead (plus you have figuring out how to water soak the gas block, short of just throwing the entire upper in the bath tube over night, becomes a little tricky.

So in regards to say a suppressor adapter that you don't want to come off, rockset works great, since if you do need to remove the adapter down the road, you can just soak the end of the barrel.  Gas block, loctite works better, since if you need to remove it down the line, little heat transfer to break the loctite bond down, and they will untorqe with ease instead.