Glock Perfection OEM Adjustable Rear Sight Fits All Models;

The Glock OEM Adjustable Rear Sight will fit (GEN 1-4) Glock models 17, 17L, 19, 20, 20SF, 21, 21SF, 22, 23, 24, 25, 26, 27, 28, 29, 29SF, 30, 30SF, 30S, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41. Please note: The Adjustable Rear Sight typically comes stock on the 17L, 24, 34, 35, 40 and 41 models.

This replacement part is a factory original from Glock. Factory replacement parts are manufactured to the exact same specifications and tolerances resulting in excellent fit and reliable operation. Some parts may need to be installed by a qualified gunsmith.