SxS Shotgun/Rifle Conversion

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Doc Nickel helped a guy with his side by side shotgun to rifle conversion. The owner of the shotgun did not want a permanent solution. He wanted a convertible shotgun. What Doc came up with is rather clever.

He came up with an end cap for the shotgun. The one common issue is that most rifle conversions weld the barrels or the end cap in place.

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By using these inserts the barrels are held in place.

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With the inserts in place, the owner can adust POI and screw the endcape in place to hold the barrels where he likes. The inserts protrude into the shotgun barrel.

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So now the rifle can be adjusted and the conversion is not permanent. The modifications can be removed and the shotgun can be used as a normal shotgun.


Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick has been only been shooting for the past 3 years but found his passion through competitive shooting. USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.


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  • Nick Pacific

    Doc is good people.

    • Vhyrus

      If you’re a paintballer, make sure to check out his webcomic, The Whiteboard. It’s hilarious.

  • allannon

    Cool.

    Also, it’s a bit odd to see a webcomic author showing up for his gunsmithing skills. ;)

    • Anton Gray Basson

      He is also a brain surgeon

      • Beaumont

        And a rock star.

        • Vhyrus

          And a polar bear.

          • allannon

            Don’t forget mad scientist.

  • Mystick

    Necessity, innovation, and all that…

  • sianmink

    Love Doc Nickel. He’s awesome, and I’m overjoyed to see a post about his work here.

  • Julio

    OK, that’s neat. But what kind of insert barrels is he using that don’t already have an adjuster system? And how is that front sight ramp mounted: to the muzzle cap, or to the rib? I’m intrigued, by the way, not dismissive.

    • Julio

      I should have read the article more carefully, because right at the end it answers my second question: “The rifle sight shown, uses the original bead sight screw hole (plus an added second hole) and covers the top of the pinch screw, as well as visually blending the clamp/extension into the rest of the barrels.”

      • jcitizen

        Thanks! I hadn’t caught that either.

  • dan citizen

    I recently permanently converted a single shot 20 gauge to .357, it’s a great way to repurpose the multitude of cheap shotguns out there (my donor one cost me $50 and $30 for the new barrel)

  • Rick

    as a huge fan of The Whiteboard I approve of this crossover :)

  • Phil Blank

    He didn’t think!
    There is a better way.