This is the CMMG AR-15 lower parts kit.

This kit includes:

• Lower Spring and Pin Kit
• Trigger Spring
• Hammer Spring
• 2 Hammer Trigger Pins
• 2 Takedown Springs
• Disconnector Spring
• Safety Selector Detent/Spring
• Bolt Catch Spring/Plunger/Coil Pin
• Trigger Coil Pin
• Buffer Retainer/Retainer Spring
• Takedown Detent