TacFire GLKSL23G2: Gen 3 Compatible, Accepts Polymer80 frames, Machined from 416rd Stainless steel, Cerakoted Graphite Black, Machined for precise fitment of a Trijicon RMR, Slide Cover plate and screws included, Channel liner not installed or included, Torque screws to a maximum of 10-12 in/lbs. 1 drop of blue loctite is also recommended, Screw size 6-32 X 7/16\","TacFire Replacement Slide 40 S&W Graphite Black Cerakote Stainless Steel with Optics Cut & Slide Ports for Glock 23 Gen3