Spring that sits behind the extractor claw
The roll pin for removal of the extractor is a one-time use per OEM specs.
DOES NOT FIT Shield variants
Fits:
-M&P 1.0 Full Size / Compact 9mm / 40S&W / 357sig / 45
-M&P M2.0 Full Size / Compact / Subcompact 9mm / 40S&W / 45AUTO / 10mm
SD9VE & SD40VE & 2.0 SD9