Aero Precision Lower Parts Kit Includes Takedown/Pivot Spring Takedown/Pivot Detent Takedown Pin Pivot Pin Bolt Catch Bolt Catch Spring Bolt Catch Buffer Bolt Catch Roll Pin Safety Selector Safety Selector Spring Safety Selector Detent 4-40 Se

The lower parts kit helps you to build a custom AR15 from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface. This lower parts kit does not include the fire control group pistol grip or trigger guard.

• Takedown/pivot Spring
• Takedown/pivot detent
• Takedown pin
• Pivot pin
• Bolt Catch
• Bolt Catch Spring
• Bolt Catch buffer
• Bolt catch roll pin
• Safety Selector
• Safety Selector spring
• Safety Selector detent
• 4-40 Set Screw (for threaded takedown pin detent hole)
• Buffer retainer
• Buffer retainer spring
• Magazine catch body
• Magazine catch spring
• Magazine catch button