PARTS ARE LISTED SEPARATELY, THE PIN IS NOT INCLUDED WITH THE STRIKER
The larger striker in the photo above is for 22XX and Discovery. It fits all standard 22XX CO2 models and it's notched to work with Discovery and 2300KT / 2400KT breeches.
The smaller striker is for 1377, 1322, 2289G Backpacker and PC77. It does not work with the older 1377 and 1322 models that have a sliding breech cover.
The striker pin is interchangeable with both strikers.