As stated the Remington lacks the magazine cut off switch and also the "speed feed" feature of the Auto Five. From memory I believe that early versions of the Remington had a safety inside the trigger guard (the Garand had a similar safety location later), I don't think the Auto Five ever had anything other than the standard cross bolt safety behind the trigger. Cosmetically the scroll work and embellishment on the receiver was different also. Again from memory but I believe early versions of the Remington had blank receivers with no scroll work but later versions might have a game scene on the receiver.

Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.