The M&P® AR-15 Rifle Complete Lower Parts Kit includes everything you need to build your finished lower receiver. All you need is a stripped lower receiver and stock assembly of your choice, and we provide you with the rest.
Included is a bolt catch, plunger, roll pin and catch spring; buffer retainer and spring; disconnecter and spring; hammer, pin and spring; magazine catch, button and spring; pistol grip, grip lock washer, and grip screw; pivot pin, pin detent, and pin detent spring; selector, detent and detent spring; takedown pin, pin detent, and pin detent spring; trigger, trigger guard, guard roll pin and a trigger pin/spring.
