The process for breaking in a new aftermarket Glock slide is similar to that of a factory Glock slide:
- Clean the pistol thoroughly and make sure it is unloaded.
- Apply a high quality gun oil or grease sparingly to the slide rail channels, base of barrel lugs, top of barrel hood and around the shaft of the barrel where there is metal-to-metal contact with the slide.
- Rack the slide repeatedly without a magazine. Pull the slide back and release. Do not ride the slide with your hand.
- After a few dozen times. Test cycling with dummy rounds or snap caps until the rounds eject consistently.
- Remove the slide and note any areas with wear to the finish. Clean all parts with a clean cloth that has a few drops of cleaning solution.
- Re-apply lube or gun oil sparingly on the same parts as before, paying particular attention to the wear spots mentioned above and re-assemble.
- Fire approximately 200 rounds through the pistol, cleaning it after every 50-100 rounds.
- Pay attention to any malfunctions or problems and address them promptly. If you experience any issues with the aftermarket slide, it may be necessary to have it adjusted or modified by a qualified gunsmith.
- Repeat the process until the pistol is functioning smoothly and reliably.
It’s important to note that every aftermarket slide may have different specifications and requirements for proper function, so be sure to consult the manufacturer’s instructions and recommendations. If you have any concerns or doubts, it’s always best to consult with a qualified gunsmith or the manufacturer.