Rock Slide USA Pistol Stripped Upper 45CAL Compatible With GEN-3 Glock 21 Lowers. Also works with aftermarket lowers. Optional RMR or Vortex Cut also Comes with screws and Allen tool. Takes standard Glock 21 parts and barrels. No license required. Ships anywhere in the USA. Lifetime Warranty.
RS1. The RS1 is our standard model, It has our standard trademark angled sides but no cuts to catch on clothing. These are popular with police officers, security guards, and EDC customers.
RS2. The RS2 model has aggressive vent cuts in the front half of the slide. These cuts shed weight, aid in barrel cooling, and gives the option to use ported barrels. These are popular with target and competition shooters.
RMR and Vortex options. The slides labeled RMR or Vortex are cut to accept a specific reflex optic. Select the cut that matches the optic of your choice.