For those who are interested in other firearms that McQueen owned here is a link showing several rifles and shotguns of McQueen's that were auctioned off in 2006. Also lists how much the firearms sold for. McQueen appears to have been a big fan of slide action ridles/shotguns and lever action rifles. Especially Remington and Winchester models.
http://www.mcqueenonline.com/gunssoldat2006auction.htm