Tactical shotgun question

Discussion in 'Shotgun' started by jason.hayes3, Aug 25, 2016.

  1. jason.hayes3 JAFO

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    Tactical shotguns with a 21 in barrel, can you take them to a gunsmith and have them threaded for a door breacher choke?

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  2. Keith Moderator

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    I think you can. You'll need to talk to a gunsmith and have him look at the barrel to make sure there is enough material. The next question is if he will. There is a lot of discussion on the recently released ITAR rules concerning such things, like threading a barrel being considered manufacturing. Only they can answer the question (or a lawyer versed on the issue).
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  3. spamassassin Well-Known Member

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    Is it a fixed choke gun? If so, measure the thickness of the metal at the muzzle. Then an answer can be approached. Without that, any answer is a guess. If it's not fixed choke, just buy a breacher choke tube.
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  4. jason.hayes3 JAFO

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    The gun in question is a Stevens 320

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  5. spamassassin Well-Known Member

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  6. jason.hayes3 JAFO

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    The one I have don't have screw in chokes. Could you not get a dye that

    The one I have don't have screw in chokes. Could you not get a cutting tool to cut some threads and do it yourself? I would imagine you wouldn't have to remove much metal to cut some threads for a choke, providing the barrel has enough material to do it.

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  7. spamassassin Well-Known Member

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    Do you have a micrometer you can measure the thickness of the muzzle steel with? If the end of the barrel is thick enough it could certainly be done as an internal thread. You probably wouldn't want to thread it on the exterior. Could also do it as a clamp on design.
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  8. Keith Moderator

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    The trick is getting the threads straight. I've seen tools that go into the muzzle for 5.56/.223 barrels that insert like a laser bore sighter that have an end that matches up with the barrel to align the die for a straight cut. Perhaps there is something out there for shotguns that does something similar?
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