Trouble is, replica Liberators are $400+. Original productions in good condition go well into the thousands. My oldest son's Father-in-law has one in like-new condition complete with box and accessories. Last I had it valued for him was $4,000.
Didn't mean to go out and get originals or even replicas. You are buying the "image".
The point is that if if a single shot .45 ACP pistol can be made that cheaply, maybe we should invest in expanding that technology to a two shot. All the features of the Heizer without the need for the "space age technology" price.
Firing pin gets set to top chamber when you close the action. Firing pin gets set to bottom chamber at the end of the trigger pull.
Not a engineer, but I bet that wouldn't be too difficult to implement in a reliable inexpensive mechanism.
They are filling a niche with Gold when carbon steel would do.