Aero Precision's line of Lower Parts Kits featuring Magpul Grips is designed to be versatile for your needs. This AR15 Lower Parts Kit includes the components needed to assemble an Aero Precision AR15 Gen 2 Lower Receiver or similar mil-spec lower receiver. It features a Magpul MOE Grip and Magpul MOE Trigger Guard. See below for a full list of included components. Includes: Magpul MOE Grip in Black Magpul MOE Trigger Guard in Black Takedown Pin Pivot Pin Takedown/Pivot Detent Takedown/Pivot Spring Bolt Catch Bolt Catch Buffer Bolt Catch Roll Pin Bolt Catch Spring Magazine Catch Body Magazine Catch Button Magazine Catch Spring Buffer Retainer Buffer Retainer Spring Safety Selector Safety Selector Spring Safety Selector Detent 4-40 Set Screw (for threaded takedown pin detent hole) Trigger Hammer Trigger Spring Trigger/Hammer Pins Hammer Spring Disconnector Disconnector Spring