Here is a post that a fellow gave on another forum.
Yes, I do. I had the base model, the M-1, I think it was called. It was 45Colt/410 shotshell. As far as quality goes, it was an excellent firearm. I shot it quite a bit. Recoil was just fine; about like a single action Ruger, it just curls into your hand.
The problem I have with American Derringer is the owner, who I have mockingly nicknamed "gramma Derringer". She goes by the handle "Lady Derringer" and you can buy calendars featuring her clad in lingerie posing with their firearms. First of all, a 50 some year old woman in lingerie? Secondly, I do not approve of the exploitation of women being used to sell firearms. I believe it is not only counterproductive, it is just wrong.
Companies that use naked women to sell their products have always bothered me. My policy is quite simple, I refuse to do business with them. I bought this pistol before I was aware of their website or advertising/marketing techniques. I got rid of it.
There is a solution
http://www.bondarms.com/ They have a variety of calibers. You buy a gun, then you can order barrels in other calibers
http://www.bondarms.com/retail/index.php?action=category& ; ;id=2 45Colt, 10mm, and some other quite interesting calibers. Some models come with oversized grips, or you can order them seperately. Most calibers have a 3" barrel. There is a 3 1/2" barrelled version that chambers 3" 410's or 45Colts. From what I'm seeing on their site they have a new 4 1/4" barrel 45/410 for 2006.
http://www.bondarms.com/ifirearms.htm