AYA No. 4 boxlock SxS in 16 gauge — the entry AYA, using a boxlock action with the same wood and fit quality as the sidelocks. Type: Shotgun Action: Break-Action Caliber: 16 Gauge Capacity: 2 Year introduced: 1917, Spain Weight: 72 oz Overall length: 45" Status: Active Intended use: Upland, Hunting