Can't recall ever hearing of National Rifle Co. I'd be a little skeptical about that.
My main question to you is: Do you know anyone who has a Marlin 1894 in .41 Rem. Mag that is or would be interested in selling? I've got a close friend who has been searching high and low for one. He passed one up NIB at a gun show last Feb., and has been kicking himself ever since. Have seen several on GunBroker but the prices were absolutely rediculous...... Would appreciate a post or PM if you know of any available.... Thanks.