Shadow systems mr920 combat 9mm flutd/unthread dlc bbl dl! Other Features: Premium grip stippling, dlc diamond-like coated slide, s/s guide rod, fluted unthreaded dlc barrel, green tritium sights.No rmr slide cut front slide serrations, flat faced 4-4.5lb trigger.Compatible with glock gen4 g19 holsters, magazines, and accessories.