Start your new rifle build or keep some spare parts on hand with the Aero Precision® AR-15 Lower Parts Kit without FCG, Grip or Trigger Guard. This lower parts kit comes with everything you need minus the fire control group (FCG), grip, or trigger guard to build out your lower receiver. What’s more, this kit is full of mil-spec dimension parts with corrosion-resistant coatings to help ensure long-lasting field performance with your favorite AR-15 rifle. This parts kit includes 1 takedown/pivot spring, 1 takedown/pivot detent, 1 takedown pin, 1 pivot pin, 1 bolt catch, 1 bolt catch spring, 1 bolt catch buffer, 1 bolt catch roll pin, 1 safety selector, 1 safety selector spring, 1 safety selector detent, 4-40 set screw (for threaded takedown pin detent hole), 1 buffer retainer, 1 buffer retainer spring, 1 magazine catch body, 1 magazine catch spring, and 1 extended magazine catch button. FCG, trigger guard, and pistol grip NOT included. Made in USA.