It is manufactured, marketed, and distributed by Fabbrica d'Armi Pietro Beretta, in Gardone Val Trompia, Italy.
The AL391 is most often used for hunting birds, and for clay target games such as trap and skeet.
The Beretta AL391 is mechanically similar to its predecessor, the AL390, but has a slimmer fore-end and a different shaped stock.
However, it provides the advantage of automatically adjusting for shot shells with different charges and therefore different amounts of recoil.
It is designed to cycle the action reliably when using a wide variety of shells, while minimizing felt recoil.