Help identifying choke tube

MBiz

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Uber Super GunNutz
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Hello everyone,

Can someone help identifying that 12 gauge choke tube. Thank you for your help

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The small graduations are 1/20th . 20 units from the end of the ruler to the 1 mark . or possibly .5mm graduations . however the proportions of the choke just don't look like a invector choke to me . the skirt end looks long and the muzzle section ahead of the threads looks short .
 
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Thank you guys. They are 35mm and I am helping one of my contact in Italy to identify those choke tube. He has a lot of them. The Winchester box is not the original box.

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The browning invector chokes I have measure 37mm over all length . the skirt length is 4mm . the muzzle section ahead of the threads measures 16mm . and the threaded section is 17mm .hope this is of some help . being that your contact is in Italy there is a very good chance the chokes may be a beretta mobile choke or a very close version of it . Browning invector choke below .
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Definitely not MobilChoke.

Im with Brybenn on this one. These appear to be accuchoke/winchoke. Invector chokes are longer with a shorter skirt then what is pictured.
 
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Given the provenance (Italy) these could be for some long discontinued and forgotten Italian system, in which case they would be unknown here. There were a number of these proprietary systems invented and used by dozens of small makers, mostly gone now. Even some of the better known makers like Franchi, Perazzi, etc changed choke systems in the early years of choke tubes, sometimes several times.
 
Most manufactoers have long ago switched to longer choke tubes so I'd say that this is a design that was likely discontinued some decades ago. Some of the Turkish guns are still using short tubes such as the Wby Sa-08 that is made by ATA but these tubes are not the same as they are.
 
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Mossberg win choke
Appears I was wrong. Haven't used a flush fit choke in a Mossberg for some years now
 

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