[Theohazard]

I have more experience using Rocksett since that’s what you use when mounting silencer muzzle devices, so that’s what I’d use. It’s a high-temp thread locking compound, but it’s not permanent. Enough torque (adding heat if needed) will break it free.

I’d recommend using one small drop at first. Give it a day or two to dry, and if the mount still comes loose when taking the silencer off use two drops next time. And so on. The key is not to use more Rocksett than you need, since it will be a real pain to take the mount off if you use too much.