I used to own a Benelli B-76. If I'm not mistaken, the design went through two or three minor changes--I believe that mine was a late-production variant. It was mechanically interesting (though I never quite understood it) and it was a natural pointer with a comfortable grip. The frame was made somewhat like a Ruger Mark II, that is, two steel stampings welded together. The B-76 ejected brass into the next county, but for me the bottom line was that it always functioned as it was meant to.
I think the single-stack magazine may have killed the B-76, since it was introduced about the time that attention was turning to the wondernines and their hi-caps.
Sometimes I'm sorry I traded my B-76 away. Another gun must have seemed more important at the time.
In spite of the unorthodox method of functioning, the gun worked well enough. But it was doomed by the single stack mag, and the lack of DA at a time when hi-cap mags and DA/DAO were the rage. I would try to explain how it works, but difficult without drawing diagrams.
The B76 is a selective DA design. It's a pretty good gun. Good trigger, excellent sights, good accuracy, a rather unique mag release, and a safety that works like one should. The only downfall is it's VERY tempermental about hollow points. Generally, it's ball only with this gun. If you like the thing, I wouldn't hesitate to buy one.
Thanks for the responses. Benelli should redesign and try again. It looked as if they had the Quality but not the right type of pistol for the U.S. market at the time. well at least they make nice shotguns.