Rock Slide RS1FS45-RMR Pistol Upper .45 ACP for Glock 21 Black. Compatible with Glock 21/20 Lowers. Black Cerakote finish. Takes standard Glock 21 internal parts, sights, and barrels. Cut for a Trijicon RMR optic.
Why choose just one when you can have them all? Our Glock 19 Premium Set includes the Tyrant Designs Glock 19 Magazine Extension, Glock Slide Cover Plate AND our Glock 19 Extended Magazine Release! All will arrive together AND you’ll save on shipping! Not to mention automatically giving your Glock that custom look and feel!
*Magazine extensions work on 15 round Glock mags*