Do these exist? I've searched all over and have not seen any.
Wouldn't this be far better than a .22 blank pistol? It'd seem that this would be especially useful for HRC training or Gun dog training to get the pop and still allow the dog to work on following the gun barrel?
I suppose that the .22 blank would not be as loud as a 12g popper, but would be less than half the cost and more beneficial from a marking/gun following perspective for HRC/Gun training.