CMMG's Springs and Pins kit contains some of the most commonly lost components of a lower parts build. If that detent goes flying across the room, CMMG has you covered.

Includes:

AR-15 Hammer and Trigger Spring
AR-15 Hammer and Trigger Pins
AR-15 Selector Spring and Detent
AR-15 Buffer Retainer and Spring
AR-15 Trigger Guard Roll Pin
AR-15 Takedown Spring (No Pins)
AR-15 Disconnector Spring
AR-15 Takedown Detent
AR-15 Bolt Catch Roll Pin

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All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.