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AR15 pistol upper build

Discussion in 'Gunsmithing' started by roadrunner, Jul 2, 2020.

  1. roadrunner

    roadrunner TGT Addict

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    I am planning to build a 10.5" pistol upper. The only 10.5" barrels that I can find have a carbine length gas system. Will this cause a cycling problem?
     


  2. CyberWolf

    CyberWolf Active Member

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    Not necessarily, no (should be fine).

    Obviously there's a handful of variables involved, but I've got a similar build that runs like a top (chopped a 16" bbl with FSB/carbine-length gas down to ~10.5")
     
  3. roadrunner

    roadrunner TGT Addict

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    Thanks.
     

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