There was some discussion on these years ago, I wanted to find out if there are any updates on these or similar devices. Due to the shortage of caps of any type presently I was looking for some options. I have successfully made caps using the no 11 cap maker called Tap O Cap and the priming compound used to reload .22 LR cartridges, however the compound is corrosive and I can not get the non corrosive chemicals without an explosive license, special equipment and so on. The toy caps add even more labor to a slow process. I have a 1000 209 shot gun caps available, as I no longer reload shot gun shells. I see the pros/cons of the adapter as these. Do not have the explosive residue on the breech of the rifle, function well, and weather resistant. The cons are slows down reloading, the loss of the removeable top/firing pin would disable the weapon, on a cold day I think it might be difficult for cold fingers, and they are picky as to the caps that will function in them. Winchester caps stick. In my Seneca the hammer is not able to get to the half cock position but rests on the firing pin, this is unsafe. The option is to carry full cock, very unsafe. Does anyone know if the the male threaded portion the firing pin screws onto can be shorted to allow the hammer to lower to the half cock position without resting on the firing pin?