Ghost Inc Maritime/Marine Spring Cups enable your Glock to shoot underwater and under hostile environmental conditions. Self cleans the firing pin channel on live fire and ensures that even with water and or debris inside your Glocks firing pin channel your Glock pistol will fire! Great for those who prefer a Glock for predators on shore as well as in the water.DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.