Finish your AR-15 M4E1 lower receiver with this Aero Precision Complete Lower Parts Kit with Magpul MOE pistol grip and a Mil-Spec trigger group. This AR-15 LPK comes with everything you need to finish an M4E1 lower and includes a 4-40 set screw for use with the threaded takedown pin detent hole present on most Aero Precision lowers. This makes it extremely easy to install the spring and detent without need to use the end plate to capture it. With a wide variety of lower parts kits available from Aero, you can choose the right one for your build.

Kit Includes:

• Magpul MOE Grip
• 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