Try Mossberg, Weatherby and Winchester
Invector is a brand not a choke. Invector is a brand not a choke.
Browning made choke tubes.
Browning Invector.
Go to Browning.com and type "Invector Choke" in the search function.
I don't think there is an invector plus model. Invector Plus is the choke system Browning uses on newer shotguns.
You will have to call Browning to find out.
Either Invector or Invector+ depending on how it left the factory.
To change the choke of the shot
Browning did not make an Invector model. That is the type choke system of the shotgun.
Starting in 1983.
The Invector, or "Standard Invector" system" was introduced in 1983. A few years later, the Invector-Plus chokes were introduced to fit the new back-bored shotgun barrels. These two choke systems will not interchange. If you have screw-in chokes in your shotgun barrel, the kind of system you have will be stamped on the barrel near the receiver. You must use the proper choke system for your shotgun.
Look at the choke tubes.