AR15 M4 Lower Receiver 9-Piece Spring Kit

The 9-Piece kit includes springs for the bolt catch, disconnector, buffer retainer, trigger, hammer, magazine catch, selector, and two detents. 

Package includes:

- 1 x Bolt Catch Spring

- 1 x Buffer Retainer Spring

- 1 x Trigger Spring

- 1 x Hammer Spring

- 1 x Disconnector Spring

- 1 x Magazine Catch Spring

- 1 x Selector Spring

- 2 x Detent Spring

This is a direct replacement for worn or broken factory parts for AR-15.

Learn more: AR-15 Small Parts & Hardware Guide