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    Qbeam

    Qbeam

    Ultimate Member
    Apr 16, 2008
    6,082
    Georgia
    Apologizes on throwing a curve, is there a difference on pistol gas system versus a carbine gas system. Looking to do a build as well.

    Q
     
    B

    BradMacc82

    Ultimate Member
    Industry Partner
    Aug 17, 2011
    26,177
    Qbeam said:
    Apologizes on throwing a curve, is there a difference on pistol gas system versus a carbine gas system. Looking to do a build as well.

    Q
    Click to expand...

    Originally, pistol gas length was optimal for being able to run subsonic or supersonic ammo with the least amount of fine tuning. Barrels with carbine length gas systems typically had too small of a gas port to run subsonic ammo with reliability. Some makers have claimed to rectify that issue, but no firsthand experience personally.

    If subsonic ammo/suppression isn't even a concern - then I'd say go with whatever floats your boat. But, I haven't found any solid reason to not go with a pistol length gas system on a 300BO. Just seems to make life easier, even if you do go with an adjustable gas block.
     
    outrider58

    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,994
    BradMacc82 said:
    Originally, pistol gas length was optimal for being able to run subsonic or supersonic ammo with the least amount of fine tuning. Barrels with carbine length gas systems typically had too small of a gas port to run subsonic ammo with reliability. Some makers have claimed to rectify that issue, but no firsthand experience personally.

    If subsonic ammo/suppression isn't even a concern - then I'd say go with whatever floats your boat. But, I haven't found any solid reason to not go with a pistol length gas system on a 300BO. Just seems to make life easier, even if you do go with an adjustable gas block.
    Click to expand...

    To tag along on what BraMacc said, if you are planing a pistol or SBR build, to go with any gas system longer than pistol, you will drastically shorten 'dwell time' which will affect cycling and reliability. 16" and longer barrel should not be a problem though.
     
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