Aero Precisions line of Lower Parts Kits featuring Magpul Grips is designed to be versatile for your needs. Each kit is available with MOE and MOE SL Grip Options in Black and FDE. Buy with our tried and true mil-spec Fire Control Group or save for an upgraded trigger with our MINUS FCG offerings. This M4E1 Lower Parts Kit includes the components needed to assemble an Aero Precision M4E1 Lower Receiver or similar mil-spec lower receiver. It features a Magpul MOE Grip. This kit DOES NOT include a trigger guard as the trigger guard is built in to the M4E1 Lower Receiver. See below for a full list of included components. Included Accessories: Magpul MOE Grip in Black or FDE 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 Specifications for Aero Precision M4E1 Lower Parts Kit w/Magpul MOE: Manufacturer: Aero Precision Gun Model: AR-15 Condition: New Country of Origin: USA Package Contents: Aero Precision M4E1 Lower Parts Kit w/Magpul MOE