This Winchester manufactured guard screw is for the model 12 slide action shotgun and is in very good condition with light slot 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 & 1734902
16 Gauge: 94168, 712401, 808640, 1116030 & 1677926
20 Gauge: 22372, 37014 & 122475