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Thread: Carbine vs. Middy: Real world use

  1. #21
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    Compared to the carbine length system, the mid-length means reliable functioning at lower operating pressures which equals less stress on parts. In any mechanical device that means greater durability assuming equal quality parts. The mid-length system adds no complexity to the mechanicals or the assembly process of the carbine and only a little to cost. While carbine gas systems run fine, mid-length gas systems are a bit more forgiving
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

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  2. #22
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    Quote Originally Posted by jonconsiglio View Post
    I don't think either one will be better for your needs. I burn through a lot of ammo every year and until about 18 months ago, I never really considered a mid length. Now, I see small advantages FOR ME with the mid length, but those small 'advantages' are in the feel of the gun and my ability to push it just a little farther on the timer.

    When it comes to real world use, I'd be fine with either. Given the choice when all things are under my control and I can actually see those small advantages, I'll take a mid length.

    Don't stress this decision, I doubt you'll see any significant difference either way in parts breakage or reliability. Have you had trouble with carbine length systems up till now? Like I said, my reasoning was for feel, then it kind of stuck and now anything that's 14.5" or more gets a mid length system since I have the option.
    Well put, Sir...I completely agree.

    To which I will add there are many, many 1,000s of carbines out there proving themselves to be just fine everyday.

  3. #23
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    If it all comes down to the gas pressure being higher on the carbine then why not just reduce the size of the gas port?

  4. #24
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    Everyone seems to be making good points to me. For the most part, it does seem like there would be no adverse issues with either system.

    By "violent" I was referring to the carbine being overgassed compared to the middy or rifle length. And that, in turn causing excess wear. However, it does not seem to be the case. If I wanted to feel some recoil, I'd bring out the Garand.

    Its actually going to have a rifle length hand guard regardless of the gas tube setup. This is for a few reasons:
    1) The barrel does indeed get hot
    2) Longest sight radius possible
    3) Limited amount of barrel exposed in case of dropping or other damage
    4) It looks cool to me

    It looks as though all things considered it doesnt matter on the system. As long as I know it is reliable and can suit my needs I will be happy with either one. It does seem I am leaning more towards the middy if I can not get too anxious and wait for the right barrel to come along.
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  5. #25
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    Quote Originally Posted by EzGoingKev View Post
    If it all comes down to the gas pressure being higher on the carbine then why not just reduce the size of the gas port?
    Because the smaller port size restricts the volume (CFM, or Cubic Feet per Minute) of the gas passing through. Just as a small compressor can supply enough pressure to inflate a tire, with a low CFM it will take awhile. Without enough volume, pressure cannot be built up inside the bolt carrier quickly enough to provide reliable functioning
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
    I am American

  6. #26
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    You will only be able to have longer handguards or rails in some circumstances. For example if you want a long rail system for a carbine you will need to go with something like the Daniel Defense Omega 12 or LaRue 11'. These options aren't cheap.

    Don't worry about dropping it. Military weapons get slammed around all the time and still function fine. Unless it falls from a helo at hundreds of feet you're fine.

    You are overthinking this whole process way too much. IMHO

    Quote Originally Posted by condition1 View Post
    Everyone seems to be making good points to me. For the most part, it does seem like there would be no adverse issues with either system.

    By "violent" I was referring to the carbine being overgassed compared to the middy or rifle length. And that, in turn causing excess wear. However, it does not seem to be the case. If I wanted to feel some recoil, I'd bring out the Garand.

    Its actually going to have a rifle length hand guard regardless of the gas tube setup. This is for a few reasons:
    1) The barrel does indeed get hot
    2) Longest sight radius possible
    3) Limited amount of barrel exposed in case of dropping or other damage
    4) It looks cool to me

    It looks as though all things considered it doesnt matter on the system. As long as I know it is reliable and can suit my needs I will be happy with either one. It does seem I am leaning more towards the middy if I can not get too anxious and wait for the right barrel to come along.



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  7. #27
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    For any barrel length over 14.5", I can't think of a single reason to to choose a carbine gas system over midlength.

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  8. #28
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    Quote Originally Posted by mtdawg169 View Post
    For any barrel length over 14.5", I can't think of a single reason to to choose a carbine gas system over midlength.

    Sent from my Droid using Tapatalk
    Here's 2: Daniel Defense Omega X 12" FSP and DD M4A1 RIS2. Great rails offering lots of area, strong fixed FSP, and can mount a light at 12 o'clock.

  9. #29
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    I don't think it really matters that much. Flip a coin. Buy the one that looks coolest. Whatever.

    This year we are going to take a run at the new chief to allow us to use personal rifles at work. After doing a lot of research and reading I figure the differences are minimal. Carbine might be overgassed but then that might help make it more reliable. Midlength might make it shoot smoother but less reliable under certain circumstances.

    If the cheif gives us the nod my #1 choice would be a Dissipator from a good company, even if it meant making one myself. I really don't care if it starts out as a BCM middy or a Colt 6920.

    Go with the features you like.

  10. #30
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    Let me add to my earlier post about port sizes as I inadvertently left out some key information.

    With carbine length gas systems, it's not a choice between "over-gassed" and "under-gassed". It's that the tolerance range between minimum port size and maximum port size is tighter
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
    I am American

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