This Winchester manufactured fourth variation (trigger) guard assembly is for the later model 12 slide action shotgun which has the cartridge guide attached to the carrier and is in very good condition exhibiting mixture of thinning original blue finish and a grayish brown patina with honest 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: 899492, 933942 & 1129908