Winchester Model 21 20ga Custom Grade 1 Engraving SOLD! Winchester Custom Grade 20 gauge with Grade1 factory engraving. 28" F/M solid rib barrels with 3'' chambers. R-.617/.O21 L- .617/.006 Flat side round top reciever. Gold plated single selective trigger. 99% barrel blue, 96%reciever blue with thinning on bottom edges. Outstanding feather crotch buttstock figure. 14 3/8 LOP to Winchester pad. 7lb 2oz A very rare Winchester in 20 gauge with 3" chambers. Factory choked in reverse fashion with the tighter choke in the right barrel. This is how John Olin ordered his 21's.