Drive out and discard spring pin (1).
Remove trigger assembly (2), arm assembly (3), and helical spring (4). Repair by replacing unserviceable components. Install helical spring (4), arm assembly (3), and trigger assembly (2). Secure with new spring pin (1).
Tools and Special Tools
Spring, pin, PN MS39086-80
Buffer and spade grip removed from receiver (TM 9-1005-313-10).
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