Browning has a web site with lots of information and a search function that will help you.
Browning made choke tubes.
If it has choke tubes, yes. If it is fixed choke, no. I called Browning about mine and that was the answer they gave me.
On the choke tubes. It is marked by lines on the front edge of the choke. The more lines the more open the choke. 1 line is a full and goes from there. If it doesn't have tubes, on the inside of the receiver near the bbls.
Starting in 1983.
Not recommended
Try Mossberg, Weatherby and Winchester
Modified describes a choke. Invector is a system of choke tubes.
Browning Invector.
What gauge and grade is it?
We are not familiar with a model 22, but all Browning Shotguns use the invector screw in choke tubes. These are available at most Gun Shops and retailers of Browning guns. You can also find them online at the Browning Co Website
A 12 gauge shotgun with changeable choke tubes that fires 3.5" shells.
Mid 80's