This will fit all Glock's Gen's 1-5, X Including the 42 and 43!
From the Manufacturer:
The Ghost Turbo Maritime Cups (TMC) are the only Maritime Cups Available that will make your Glock the most reliable by permitting the firing pin to bypass water, oil or debris better than ever thru the firing pin channel. This is done by creating voids for the fluids or debris to pass through. This feature insures reliable firing even under water! The Ghost Turbo Maritime Turbo Cups also lessen the friction in the Glock firing pin channel. You can now confidently shoot your Glock to the extreme! You may use this product for all lawful activities.
FYI: Glock, that's right I said GLOCK (not Ghost) will only sell this item to law enforcement agencies & the military for official use and requires a letter on agency letterhead.
Manufactured and designed by us, Ghost Inc.
MADE IN USA