This Winchester manufactured trigger lock plunger spring is for the model 12 slide action shotgun and is in near excellent condition with light wear. (file photo)

Note: Winchester model 12 slide action shotguns with the following gauges and serial numbers have been observed with this part:

12 Gauge: 318823, 588236, 899492, 933942, 1129908, 1385282, 1734902, 1870723 & 1907555

16 Gauge: 94168

20 Gauge: 22372, 37014 & 122475