The Winchester SX4 12 Gauge Semiautomatic Shotgun is outfitted with a 28-inch, chrome-lined barrel, an aluminum-alloy receiver and a synthetic stock. It also comes with the Invector-Plus Flush choke system and a 3.5-inch chamber. Winchester SX4 12 Gauge Semiautomatic Shotgun - Shotgun Semi Automtc at Academy Sports
