Designed perfectly to replace your factory Back Plate. Made from Stainless Steel with a Black Cerakote coating. CNC milled engravings take special care, skill, and time to produce but the final product is an elegant, three-dimensional engraving unmatched in both quality and durability and sure to last a lifetime. Easy to put on and Fits ALL Glock models of all generations EXCEPT the Glock 42 and 43.