Ghost maritime turbo spring cups fits all glocks FEATURES:-Fits all Glock's gen. 1-4 including the 42 and 43-Only maritime cups available that will make your Glock the most reliable-Permits the firing pin to bypass water, oil, & debris through the firing pin channel-Creates voids for the fluids or debris to pass through-Insures reliable firing even under water-Lessens the friction in the Glock firing pin channel-Use for all lawful activities Other Features: Will fit all glocks including the glock 42 and glock 43, allows more liquid, carbon, dirt, debris to pass through the firing pin channel