SJC Convertable Compensator Mount in your choice of finish and model set up and ready to go. Just install, zero and compete. The Burris Fast Fire Microdot Sight is a new 4 moa red dot sight in a metal housed body with a glass lens, weight is 25 grams, comes complete with battery, on off switch, sight hood, adjustment tools, is typical of other well known red dot sights. This is one great value for the dollar!Quantities Limited SJC