The recoil system has two recoil springs. One is between the rotating bolt head and the bolt, and the other is located behind the receiver assembly inside the stock. The first spring delays opening the action until the shot has left the barrel, the second spring pushes the bolt back towards the chamber and operates the carrier latch and carrier to load a subsequent round from the magazine.
The Super Black Eagle models have 3-1/2" ultra magnum chambers. The rest of their products are chambered for 3" magnum shotshells. The M1 Super 90 models are available with a variety of barrels, including short barrels for their Defense, Tactical, and Entry variations. The Montefeltro Super 90 models are M1 receivers but with walnut stocks. The M3 Super 90 models have selective pump or autoloading actions.
On the positive side, Benelli shotguns have a reputation for high reliability, fast operation, low weight, and ease of maintenance. On the negative side, their low weight and recoil operation are noted for producing a larger degree of felt recoil than their competitors.
In the United States, Benelli shotguns are distributed by:
Heckler & Koch
21480 Pacific Blvd.
Sterling, VA 20166-8903
703-450-1900