Never heard of a model 22 BPS. A Browning BPS in 20 gauge can vary from 150-400 depending on condition.
300 USD or so
I don't think there is an invector plus model. Invector Plus is the choke system Browning uses on newer shotguns.
Browning Invector.
100-675 usd
B-80
Browning did not make an Invector model. That is the type choke system of the shotgun.
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
Browning never made a Model 51 shotgun.
Depending on condition $300-$450
Can't answer about "Volunteer" question. Please tell which model. Volunteer is not a model by Browning
No, Invector chokes will not fit the Browning Medalist shotgun. The Medalist typically uses fixed chokes that are integral to the barrel, while Invector chokes are designed for Browning shotguns with removable choke systems. It's important to check the specific model and choke compatibility for your shotgun.
Browning shotgun. Field Model. Either a 12 gauge or a 28 gauge. Invector-Plus refers to the type of choke tubes it uses.