This is a Beretta known as the 686 Silver Pigeon I Sporting chambered in 12 Gauge 3", model J686SJ2L.
The legendary 686 action is a long-standing favorite among hunters and competitive shooters. It features two conical locking lugs at mid-action" right between the barrels" giving it great locking strength and durability.
Features:
Two conical locking lugs
Low profile receiver
Excellent locking strength and durability