Want someone to buy your rifle? Butter them up with a demo model to play with. It still works that way today, and eighty years ago it was the same way. We have an interesting letter written to a Captain Porter by John Pedersen, describing the Pedersen rifle and ammo being shipped to him in time for deer season (click to enlarge).
Who wouldn’t like to get a note like that in the mail? The only bummer is that he wants to have the rifle returned when Captain Porter is done with it.