CMMG Gun Builder's Lower Parts Kit - made in USA

Includes the following:

• HD receiver pivot pin
• Bolt catch
• Magazine catch spring
• Magazine catch
• Safety selector
• HD takedown pin
• Hammer/trigger pin (2)
• Bolt catch spring
• Bolt catch plunger
• Bolt catch pin
• Buffer retainer
• Buffer retainer spring
• Selector detent
• Selector detent spring
• Magazine release button
• Takedown/receiver pivot detent (2)
• Receiver pivot detent spring
• Takedown detent spring