Have a low profile gas block that I need to install on a barrel. The gas block has two set screws on the bottom and the barrel already has a dimple for one of the set screws.
What type of locktite should I use on those set screws?

Also, I need to get a strap wrench to install a DD M4 rail and was wondering if there is anything you guys recommend? Or what to look for or avoid?

Figured I'd try to find something local (Lowe's, HD, auto parts...) instead of ordering.