They already make the JACO-style and Leinad derringer kits, if I'm not mistaken. It'd be a niche product, just like G3 flats, but there'd be a market for them. Assuming you'd be able to afford doing so, I'd do a test-run of like fifty kits & offer them for sale at the various builder sites and forums, and see how long it takes to move them. Quite often, the market for things like this is satisfied by about a dozen sales at a time, due to the small pool of potential buyers, so be prepared to invest in some marketing if you want a larger scale return than that.
If you can afford to sit on a pile of these kits almost indefinitely, they will slowly sell at a fairly consistent rate, I'd bet. You just won't become a millionaire
. Price for these things needs to be some fraction of the finished item, unless you again plan on using marketing to play up the desirability of 'making it yourself.' I'd start at 3/4 of the complete derringer's price and see how they move, then adjust accordingly; just make sure your manufacturing costs are well below that figure, so the venture is worth your while.
BTW, If it requires nothing but drilling a couple jigged holes to complete, I doubt the ATF will determine it to be 'not a firearm,' unfortunately. If you know to the contrary, I'd be glad to hear it, but the ATF has long been opposed to guns that are too 'easy' to make (God forbid someone make a product that only takes
ten times as long as calling up the local illicit gun dealer before embarking on a drug deal or robbery
)
I can't imagine enough people buying it to make it economically feasible.
I agree. But if you look at The Flat Spot, any one of their product lines fall in the same category (esp the 80% steel-sheet weld together AR), yet together support a successful portfolio for a laser cutter business. I'll bet there are keychains that sell better than most of his items, yet he is indispensable to a fair number of home gun builders (the Suomi and PPSH magwells are very convenient)
TCB