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Why Are There Different Style Adapters for the Sparrow?

Discussion in 'NFA Firearms and Accessories' started by weblance, Mar 30, 2013.

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  1. weblance

    weblance Member

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    Sep 15, 2011
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    I got my stamp, and suppressor today. Its a SS Sparrow. I recently bought an adapter for my S&W 422. I ordered the "Sparrow" style adapter. I have a Ruger 22/45 LITE, and Ruger 22/45 Threaded Barrel. The adapter I ordered for the S&W 422 is different that the Ruger barrels. It goes deeper into the suppressor. They obviously are all 1/2x28. Why the difference? Does it matter?

    Sparrow422_zps8c212624.jpg
     
  2. Zane

    Zane Member

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    Sep 8, 2008
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    The SS Sparrow has an o-ring that is supposed to help seal off the pistol threads from the rest of the suppressor. It also adds friction to resist turning. The extension is to engage the o-ring.
     
  3. wally

    wally Member

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    You don't really need them if the barrel is threaded 1/2x28. If you want the "O-ring" feature then buy it, but no other suppressor maker does this, so IMHO the benefits are minimal. I got the adapter for my (P22 which needed it because it was not 1/2x28) and if the O-ring really does anything, I've never really noticed it.
     
  4. Captains1911

    Captains1911 Member

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    To take advantage of the o-ring engagement which keeps threads on both suppressor and host clean. Also helps keep the can from loosening.
     
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