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Thread: A5 EMOD system on a STD carbine

  1. #41
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    Nobody has said that DD's are overgassed or BCM. So you either have not read the A5 thread or you fail to understand its' benefit.

    The benefit of the A5 is such that it will allow you to use any type of upper on the same lower. For example;

    Today I went shooting with another local guy and he brought two of the AR's that I built him. One was a Noveske 16" midlength with Switchblock and the other was an 11.5 BCM upper.

    We succesfully ran his midlength, his 11.5" upper, my 11.5" and my 12.5" upper all on the same lower with the same spring and buffer. We shot PMC Bronze, XM193, Federal AE 223 and some Prvi Partizan .223 75gr. Match ammo.

    That is one benefit. No switching buffers or trying to figure anything out. The 11.5 and 12.5 were incredibly soft shooting. His 11.5 was outfitted with a Battle Comp and the 12.5 was outfitted with an AAC 18T flash hider/ mount.

    Quote Originally Posted by jet80tv View Post
    I'm running a DD 16" M4 carbine gas CHF barrel now and I would hardly call it "over gassed" the notion that all carbine systems are "over gassed" at least from a negative performance standpoint is preposterous. I run a BCM H2 and standard BCM carbine action spring and this setup has done exceptionally well with various kinds of ammo, both quality and low powered steel case wolf/Tula.



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  2. #42
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    Quote Originally Posted by jet80tv View Post
    I tried to ask a question in a previous thread about how it seems like people post a lot about their various system problems and different ways they try to tune their rifles. I do not to this point seem to have any problems with a carbine length system. The thread was closed and I was told they people have problems because the are dicking with their guns and don't know what they are doing, I wonder if that included the A5 crowd?
    There's too much mis information surrounding the A5 system. It's not magic. It's effectively a rifle buffer system. That's it!

    It's not dicking with the gun. It's going back to the original formula. With the exception of the dimensions of the RE and buffer... you're doing the same thing as running a rifle buffer system on the carbine upper.... which is a GOOD thing.
    "You people have too much time on your hands." - scottryan

  3. #43
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    Quote Originally Posted by markm View Post
    There's too much mis information surrounding the A5 system. It's not magic. It's effectively a rifle buffer system. That's it!

    It's not dicking with the gun. It's going back to the original formula. With the exception of the dimensions of the RE and buffer... you're doing the same thing as running a rifle buffer system on the carbine upper.... which is a GOOD thing.
    Understood. IG's explanation above explains a lot, but the op was asking about 16" barrels...oh I guess it doesn't matter what the barrel length is.

  4. #44
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    Quote Originally Posted by markm View Post
    There's too much mis information surrounding the A5 system. It's not magic. It's effectively a rifle buffer system. That's it!

    It's not dicking with the gun. It's going back to the original formula. With the exception of the dimensions of the RE and buffer... you're doing the same thing as running a rifle buffer system on the carbine upper.... which is a GOOD thing.
    Agree markm. My comment on "dicking" around with the gun was referring to people who just threw stuff into their guns like buffers, springs, and other randomness without understanding the AR system as a whole.

    The A5 is pretty much drop in ready, or screw/wrench on ready. I don't want to replace the standard carbine RE on my already built lowers, but I'm building all future lowers with it.

  5. #45
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    Quote Originally Posted by jet80tv View Post
    ...oh I guess it doesn't matter what the barrel length is.
    Not necessarily. The 14.5 middy doesn't always work well with the Rifle buffer or the A5 system. But generally speaking, switching to A5 or Rifle buffer systems is an improvement.
    "You people have too much time on your hands." - scottryan

  6. #46
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    Thanks all.

    Based on what I read, and feedback, it seems that it is a great addition to a 16" w/carbine gas. So, my new build will wear it. Based on how that goes, I may switch out my DDM4.

  7. #47
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    Quote Originally Posted by Bimmer View Post
    I'm not trying to be argumentative, I'm just trying to understand the terminology here.

    When you say "completely," I think you mean "as far as it goes."

    If a stock collapses "completely," then I would expect the front of the stock to be flush against the end plate, or pretty damned close — my M4 has a 1/16" gap.

    If there's always at least a 3/4" gap between the end plate and the stock (even when the stock is collapsed "as far as it goes"), then I would say that that combination does NOT collapse "completely."
    Yeah, sorry about that. By completely collapsed, I meant to the point where it could not go any farther. For the A5 with the CTR, SOPMOD, iMod, M4 stock that's between the first and second position.
    Proven combat techniques may not be flashy and may require a bit more physical effort on the part of the shooter. Further, they may not win competition matches, but they will help ensure your survival in a shooting or gunfight on the street. ~ Paul Howe

  8. #48
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    Quote Originally Posted by markm View Post
    There's too much mis information surrounding the A5 system. It's not magic. It's effectively a rifle buffer system. That's it!

    It's not dicking with the gun. It's going back to the original formula. With the exception of the dimensions of the RE and buffer... you're doing the same thing as running a rifle buffer system on the carbine upper.... which is a GOOD thing.
    I've been saying that since they were first released in many of the A5 threads. I think the problem is that many of the AR owners out there have never owned a rifle system and don't realize what the differences are. So, they immediately start to compare the standard A5 weight buffer to running an H3 in a carbine RE and think people are screwining around when switching to the A5.

    The only thing I screwed around with was I lightened one of mine to run in my BCM 14.5" mid length. the only reason I did that instead of switching to the carbine RE was that I didn't have an extra carbine receiver extension laying around.
    Proven combat techniques may not be flashy and may require a bit more physical effort on the part of the shooter. Further, they may not win competition matches, but they will help ensure your survival in a shooting or gunfight on the street. ~ Paul Howe

  9. #49
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    So I can assume that the only real difference is in the springs.
    The BCG has a set distance of travel be it rifle or carbine tube.

    The pre load and the compressed load of the action spring is
    changing the performance of said weapon.

    Anyone know the numbers for the load on both springs.
    I would think someone would make a carbine spring to match
    the rifle one instead of coming up with a whole new RE system.

  10. #50
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    Quote Originally Posted by 2 Horse View Post
    Anyone know the numbers for the load on both springs.
    I would think someone would make a carbine spring to match
    the rifle one instead of coming up with a whole new RE system.
    That WON'T work. The carbine action spring HAS TO have a greater tension to offset the compression cycle.

    Although the bolt group travel is the same, the rifle spring doesn't have to compress down as much since the buffer is longer.
    "You people have too much time on your hands." - scottryan

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