Threadlocker Blue Medium Strength 1ml
This is the equivalent to LOCTITE BLUE 242 but in a smaller more affordable 1ml tube. If you plan to take apart the MQR and change out the Glow-in-the-Dark vials and/or you plan to use your own tritium vials. This is also recommended for any products that you use that has screws that can accidentally loosen up over time. These are good for pocket knives or to use on pens with pocket clips that are usually held on by tiny screws.