GUN Educate me: Carbine vs Mid-Length Gas Systems

Discussion in 'On Topic' started by Emanon, Apr 12, 2010.

  1. Emanon

    Emanon Active Member

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    Ok was trying to make up my mind over buying a LE6920 vs a BCM upper and a lower.

    I came across the 14.5 uppers with the flash wielded on to make it a 16" barrel. Also then you can pick the gas system (Carbine vs Mid-length) So what are the pros and cons of the different gas systems? Is the 16" barrel on the colt bad with the carbine gas system?
     
  2. THT

    THT The easy way is always mined

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    In all respects, midlength is superior to a carbine. Smoother recoil impulse, not as harsh on components, longer sight radius are the major advantages of the middy versus the carbine.
     
  3. THT

    THT The easy way is always mined

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    If I were building a non-SPR AR, I'd get a 14.5" lightweight 1:7 barrel drilled for a middy, low-pro gas block and a rifle length free-float rail and perm-attach a FSC556. But that's just me...
     
  4. Kira Yamato

    Kira Yamato New Member

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    i heard SBR ARs having trouble cycling, because of the gas system. but thats what ive heard can anyone back up the information?
     
  5. Keesh

    Keesh New Member

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    Build it right or buy one with the correct sized gas port and correctly matched buffer and you'll be fine. I've put plenty of rounds through mine and never had a malfunction.
     
  6. dpixel8

    dpixel8 New Member

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    you heard wrong. have not had ONE SINGLE FTF or FTE in my 10.5
     
  7. GearHead

    GearHead Active Member

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    I like my carbine, but I think I'm in the minority.
     

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