Thread Protector for 5/8x24 Thread (2 Pack) Slide/Upper Cover Back Plate for Glock Generation 1, 2, 3, and 4, crafted from aluminum. 1/2"-28 Threading Alignment Tool for.22 /.223, built from stainless steel. Extended Magazine Release Lever and Auto Release Plate for the Ruger 10/22. Thread protector featuring 1/2x28 threading. Thread protector featuring 5/8x24 threading. 2-Pack RMR Cover Plate for Glock 17, 19, and 26 cut slides, made from anodized aluminum ❗❗To avoid unnecessary after-sales issues, please confirm the model details with us before placing your order. ❗❗