Look, it's great that some of you don't use thread locker on muzzle devices and haven't had an issue with them backing off, but quite frankly it's irrelevant here and I don't really give a shit what you choose to use. I have had brakes back off that were properly torqued on precision threads with great fit and I've had to go through the fuckery of getting those brakes out of the cans. So I use thread locker because that doesn't happen when you use it on properly prepped threads. Most suppressor manufacturers also recommend the use of thread locker and many include it when you buy the muzzle device. I would think they know better than most and see more first hand issues than the typical end user.
Regardless, this stuff is marketed specifically for this use and it even says in on the product page. It doesn't have disclaimers about using it on precision fit threads on the product page or on the technical PDF so it should work as designed and advertised. It didn't work as designed and advertised and didn't release as it should have.
Furthermore this brake wasn't even torqued all the way to the spec. I've had accuracy issues on 1/2-28 muzzles when high torque is used so I don't gorilla them. I set the torque wrench to 15ftlbs with a crows foot which ends up about 17-18ftlbs with the offset.
I've spoken to Lori at vibratite again this morning and also Michael at Larue and will update the original post with that information shortly.