here is a 12 ga shotgun (Franz Jager)It is marked as a Simson Jager Patent. the double lumps are supposed to prevent side to side movement under heavy recoil and the push button where you would normally see a safety actually uncocks the mainspring. both these features are intended for double rifles according to the makers grandson. maybe solutions for non existent problems but interesting, I also just picked up a nice 16 ga Mich Pegam Ferlach SXS that has a flip up rear sight maybe for use with slugs?
