The first is my fathers Winchester 1897. This model is the take down model. I haven't had it apart in years. This gun was given by a dentist in Maysville Ky to my dad when he was ten years old in 1934. It was made in 1922.
The second is my FN Browning Auto 5, mine was made on the late 1950's.
The third one my Mossberg 590, it has a bayonet lug too.