Sweet 16 A-5
I bought this one in the 70's, when I lived in S. cal., it is a 16 ga., and is chambered for the 2 9/16" shell, rather than the 2 3/4". It had been well used before I bought it, evidenced by the rounded smooth corners on the butt pad & the fact that the extractor was worn out. I replaced the extractor/spring and bird hunted with this gun for 40 years, handloading for it. I have harvested hundreds of quail, chukkar, doves and pheasants with this gun. Other than the extractor issue, I have cleaned it and shot it.
I have always been fond of the 16 ga., it was the dominate field gun in our area when I began hunting with my dad and uncle's in the60's.
It has the polychoke on it, which actually works pretty well when you pattern the gun. I have shot everything from bird loads to slugs through it.
The last photo is of a polychoke with the cuts compensator, which is on a Remington 48 12 ga., that my Uncle hunted with for over 50 years, it has accounted for untold numbers of squirrels, rabbits, fox and deer.
These devices may not be sleek and streamlined, but as pointed out above, they are effective. And they were an attractive option for the working man who wanted to own a shotgun that "could do it all".