MOSSBERG 500 PART # DESCRIPTION QTY POR 1966 Action lock hammer spring 5 1996 Action lock disconnect spring 3 1515 Action lock lever 12ga 1 6781 Bolt 20ga (striped) 1 6443 Bolt slide 12ga 1 5431 Bolt lock 20ga 1 7557 Cartridge stop 12ga 3 1533 Cartridge stop 20ga 1 2351 Cartridge stop 410ga 2 7607 Cartridge inteceptor assembly 12ga 3 2362 Cartridge inteceptor assembly 410ga 1 7763 Disconnector 2 1538 Ejector 12ga 2 2222 Ejector 410ga 2 1765 Elevator assembly 12ga 1 1842 Extractor LH 8 1841 Extractor RH 8 11793 Firing pin 12ga 10 1544 Firing pin retainer 4 1998 Hammer pin 2 1965 Mainspring guide 2 1556 Mainspring plunger 2 1195 Mainspring 2 1554 Magazine follower 12ga 2 7441 Safety block 12-20ga 7 1561 Safety detent ball 1 1562 Safety ball spring 4 1820 Sear 1 1516 Sear pin 2 1564 sear spring 2 11120 Stock bolt 2 7650 Trigger housing assembly 20ga 1 1578 Trigger pin 2 1580 Trigger housing pin 7