Manufacturers Winchester Shotguns 12 Action Slide Lock, 12 Ga., New Factory Original (w/ 2 Springs)
Action Slide Lock, 12 Ga., New Factory Original (w/ 2 Springs)

This part is found in the following schematics

Action Slide Lock, 12 Ga., New Factory Original (w/ 2 Springs)

This part is found in the following schematics