I have used both blue and red lock tight. Red holds very tightly. To get red lock tight to release, you have to use heat for a few minutes. I think 350 degrees Fahrenheit is the right temperature, but you can do a web search on that. Some use lighters or hot air guns to heat it. The red lock tight will turn white when it is heated enough to release. I doubt normal use of a pistol will get the red lock tight to its release temperature.