Includes all the parts of a traditional AR-15 lower parts kit except the standard trigger is replaced at the factory by Rock River's National Match 2 Stage Varmint Trigger.
Simple to install with the included printed directions from Rock River in the package.
Compatible with all mil-spec AR-15 lower receivers--Colt, Bushmaster, DPMS, Stag, Double Star, Larue, YHM, Smith and Wesson, Armalite, etc.
An add on option is the Hogue Pistol Grip, normally available as a separate kit
Part No. AR0120NM