Loctite Threadlocker: A Must-Have for Installing Optics | 0.5 mlWhether you're installing an adapter plate to the gun slide, or attaching an optic to plate or red dot mount, threadlocker is essential. Without it, your red dot may loosen and fly off after just a few shots due to recoil. How to Apply Apply: Place a drop of Loctite on the threads of the screw you intend to use. Wait: Allow the threadlocker to dry for a few minutes. Secure: Insert and tighten the screw as usual. Your mount is now ready for use.