So these are handmade custom backplates for your Glock firearm. These fit all Doublestack Glock firearms including, 17,19,19x,20,22,23,26,29,30,32,34,36, and 40. It will not fit Glock 42,43,43x,44, as these require a different style. If you have a gen 1-5, select the gen 1-5. If you have a “V” or 6, pick the gen v-6 model.