Win 'Duck's' made for stock had beavertails and had a specific factory # but none were made for stock with beavertails in the 1950's. If I remember correctly there were pistol, straight grip and 30 and 32" barrel options for stock and of course DUCK was stamped on the floor plate.You could of course order anything you wanted from Winchester and the only way to know about a particular gun is from Cody which houses the Winchester Model 21 records.-Dick
BTW I don't know if Winchester would make such a simple subsitition or would ask for the Gun to be ordered as a 'Custom Built'?
Last edited by Dick_dup1; 11/23/14 12:31 PM.