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Thread: Carbine vs Mid

  1. #71
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    Quote Originally Posted by Jay_Cunningham View Post
    Yep, it certainly was, and you're right it was about the whole layout of the gun. If it had been a mid-length I still would have bought it because the gas system argument is overblown and I'm comfortable "running" either. FWIW, this gun is a one-for-one replacement for my previous "go to" gun which was an LE6920 configured in largely the same fashion. Carbine gas system!


    Yep, it's the singer, not the song. Now that doesn't mean that there aren't guns that are easier to shoot than other guns. If you have a gun with shitty sights and a very heavy trigger and a poorly designed grip, it's obviously going to be harder to shoot well. But all things being equal, if you have an AR-15 with a car gas system and an AR-15 with a mid-length gas system, you are going to shoot them both about the same.

    And if you suck the middy isn't going to help you much - only training and range time will.

    Unless we do a wholesale switch back to rifle gas systems - they shoot really smooth!! And have a super long sight radius!!
    I'm glad we can find *something* we can agree on.

  2. #72
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    IMHO, its really a matter of preference for the user and as Nutnfancy on youtube states, POU(philosophy of use) is for the particular rifle you are using. Me being a bigger dood, I like the mid length due to its longer grip and if installing a quad-rail of some sort, it gives you a little more real estate to play around with. A down side to it is, in my own experience, parts are a little harder to come by that fit my middy. Either or, more personal preference than anything for a standard civilian user.

  3. #73
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    Quote Originally Posted by Th3Revreant View Post
    IMHO, its really a matter of preference for the user and as Nutnfancy on youtube states, POU(philosophy of use) is for the particular rifle you are using. Me being a bigger dood, I like the mid length due to its longer grip and if installing a quad-rail of some sort, it gives you a little more real estate to play around with. A down side to it is, in my own experience, parts are a little harder to come by that fit my middy. Either or, more personal preference than anything for a standard civilian user.
    OMG, please dont quote NutnIntelligent.

    In this day and age youre having a hard time finding middy parts? Like what?
    Last edited by LowSpeed_HighDrag; 11-21-10 at 18:03.

  4. #74
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    just looking for OD green standard middy handguards and OD green 6pos stock. Sorry for the hijack. I only need the standard hg because of the small rail sections im using. Having issues locating a decent, used free float quad-rail for it.
    Last edited by Th3Revreant; 11-21-10 at 19:32.

  5. #75
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    Pretty much this
    I should have said factually.

    Increasing the gas system length, assuming the barrel length and gas port diameter remains the same, will decrease dwell time and affect the extraction process.

    How much better is the mid length system over the carbine length system? We don't know......

  6. #76
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    Quote Originally Posted by BWT View Post
    The philosophy I subscribe to is run the longest gas system you can in DI.

    If that's Midlength because you have a 14.5''+ barrel, if that's a Rifle Length at 18''+, Carbine length at 14.5''or less. (And honestly, alot of people are having great results with running Mid-Length gas systems on 14.5'' so I might just run a carbine length on barrel lengths shorter than 14.5'')

    I mean, faster gas port erosion, faster parts wear at higher pressures and more are the concerns.

    But again, I haven't seen those documented. They would seem to be true, but I haven't seen it tested either.

    What you do know is that it gives more dwell time and less recoil for 2'' of gas tube, a longer handguard, (which IMHO is better for handling the weapon, and even if you don't handle way out there, it's nice to have options, you can attach a bipod, etc.), and usually has a lot less extractor issues as it isn't as "violent" extraction.

    Use what you want, but I don't see a downside with going with the longest gas system available as a general rule of thumb.



    great post.

    i went this route with my 16'' carbean/bushy.
    cutt the barrel back to 13.5 added a levang comp.
    m16 carrier and H2 buffer.

    works great.
    no issues at all, softer shooting.

    peabody
    i started this life with nothing.....kept most of it.

  7. #77
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    I don't have the link, but I thought there was a statistically higher rate of bolt breakage in M4s vs M16.

    It's a fact that port & chambers pressures are lower as you move down the barrel.

    Here's a good pic illustrating the point.

    Black River Tactical
    BRT OPTIMUM HFCL Barrels - Hammer Forged Chrome Lined 11.5", 12.5", 14.5"
    BRT OPTIMUM Barrels - 16" MPR, 14.5" MPC, 12.5" MRC, 11.5" CQB, 9" PDW
    BRT EZTUNE Preset Gas Tubes - CAR and MID
    BRT Covert Comps 7.62, 5.56, 6X, 9mm
    BRT MarkBlue Gas Tubes - BRT EXT, EXC and PDW Lengths
    BRT MicroPin Gas Blocks - .750" & .625"
    BRT MicroTUNE Adjustable Gas Blocks
    BRT CustomTUNE Gas Ports

  8. #78
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    do carbines show any pattern of more parts replacement, or parts failure than a mid length? what parts fail on carbine's that would have lasted longer in a mid length for a given round count? I'm just looking for examples of mid lengths lasting longer vs carbines.

    I personally picked a BCM 14.5 inch LW carbine over a 16 inch LW mid length when i recently made my last purchase. So far I love this gun, very compact, very light, very reliable, and it flat out shoots great.

  9. #79
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    Quote Originally Posted by thatpanda View Post
    do carbines show any pattern of more parts replacement, or parts failure than a mid length? what parts fail on carbine's that would have lasted longer in a mid length for a given round count? I'm just looking for examples of mid lengths lasting longer vs carbines.
    there's none

  10. #80
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    It's a fact that port & chambers pressures are lower as you move down the barrel.
    I wouldn't dispute this, but how significant of a difference is it?

    If low pressure was ideal, we would all use rifle gas systems.

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