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Autos and pumps, on the receiver. Over/Unders are undr the breech locking lever
Where the shell is loaded.
From the breech.
From the breech
Try the barrel, action, breech
In front of the butt stock .
Near the breech.
How do you remove the breech block on a Browning A5 16ga shot gun
Find a good gunsmith.
Less than $100.
the first shell is pushed fully into the side loading port this shell will operate the action and be fed into the breech the second shell loads into the same port but sits there until called for this gun will only cycle 70mm long shells they are easilly obtained
That is the rear end of the barrel where the shell is inserted.