This Remington manufactured 30" long vent rib barrel with a fixed full choke and a 3" chamber is for the model 1100 Magnum semi-auto shotgun in 12 gauge and is in very good condition except for the multiple scattered spots of older rust and pin prick pitting located mostly towards the muzzle. (file photos)

Note: Remington model 1100 Magnum semi-auto shotguns with the following date codes and serial numbers have been observed with this part: M855933M

AP (March 1967): 399178M