OK, I'm going to call the importer tomorrow.
Again.
I wasn't as crazy as I thought. I do have the mobil chokes.
And this gun, is not that.
Here is a copy of the email I got back from Carlson.
Since you can't see the choke photo in the copy of the email, here's what I'm seeing.
The choke on the left is the factory choke and the choke on the right is a Carlson Mobil choke.
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The choke in the picture is NOT a Benelli mobil style. All mobil style chokes have the threads running all the way to the top of the choke. So your gun will NOT accept Benelli Style choke tubes if this came out of your barrel. This choke appears to be a Franchi (Fran Choke). Hard to tell without having it to measure dimensions off of but it sure look like one. We do make Fran chokes but without knowing the dimensions of the choke I am guessing.
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OK, with that out of the way, the plastic follower is gone. Made a new one from Aluminum, just because I could.
And after I painted the face of it sunburst yellow and got it in the gun.
And while I don't have any intentions of doing it right now, I checked and it will accept a Rem 870 +3 mag extension, however there is a slight gap. One guy on youtube cut the mag tube to eliminate the gap.
I opted to go a, well, let's just say a less intrusive way.
I made a little aluminum shim. If I ever put the extension on, I would paint it flat black to match the gun. But that would be later on down the road, if ever.
The front sight blade is a little canted.
But apparently, in a good way.
This is my first shot. One of my slug reloads. 20 yards. The target said it was with an improved cylinder choke, but since the mobil chokes don't fit, I could only use the cylinder choke that it came with today.
I am also considering drilling a small hole through the front sight blade and modding it for a fiber optic sight if I have enough clearance and room to do it. But that will be another day.