need info on a shotgun

[carpshooterdeluxe]

i recently inherited a winchester 1400 mark 2 semi auto chambered in 2.75 20 gauge. it has a 26 inch barrel with interchangable chokes. question i have is there any barrels out there with vent ribs or is it possible to gunsmith a vent rib onto this barrel? also are there chokes available for this gun? it only came with the modified. thanks in advance for any help!

[CAJ]

There are barrels already available for your gun. I got one from a gunsmith in Souxfalls myself. Can't remember the name. They also can put ribs on very cheap. CAJ