The Brownells GlockA(R) 19LS RMR Slide & Barrel Kit is a great way to build your own customized GlockA(R) from the ground up! Included in this kit is a Brownells 19LS Extended Slide for GlockA(R)19. The 19LS Slide is available with stantard Glock~ dovetail for iron isghts or an upgraded version ready for a RMR MRDS. Slide is available with window cuts to reduce reciprocating mass for less recoil and enhanced barrel cooling. A precision machined Brownells Extended 9mm Barrel for GlockA(R) 19 rounds out the Brownells GlockA(R) 19 Extended RMR Slide & Barrel Kit, ensuring exact fit and performance. Your choice of threaded or non-threaded. Nitride finished Slide & bar Mfg: Brownells