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Thread: The Vltor A5: my journey to, and away

  1. #11
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    Do you build these ARs yourself?
    Nobody ever got shot climbing over the wall into East Berlin.

    Delivering the most precision possible, at the greatest distance possible, with the highest rate of fire possible.

  2. #12
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    Quote Originally Posted by Leuthas View Post
    Do you build these ARs yourself?
    No, Noveske and Daniel Defense did. I did swap RE's on the DD though.

  3. #13
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    Quote Originally Posted by WS6 View Post
    This is not a Vltor problem, it's a mil-spec spring problem. However, the M16 spring seems to have just a TOUCH less wheaties than the carbine spring, and it is more apparent with the Vltor A5 setup. I had the same issues with mil-spec carbine RE on my Noveske. I blamed it on Noveske being out of spec because of all the issues Ive seen from them, but this Vltor on my DD underscores the fact that it's the spring, not the gun, in both cases.

    The sprinco Blue spring completely mitigates the issues.
    Well, Vltor has the kit springs made to their specs, which IIRC match milspec. You're using a Vltor spring, so it is their problem. Give them a chance to examine the issue and make it right.

    If you want to try an aftermarket spring, the Sprinco Green is noticeably stronger and the AR10 Tubbs flatwire spring should be stronger and more linear as well. I recall BufordTJustice doing some testing on this.

  4. #14
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    Strange, never had these issues in 5? 6? A5 equipped rifles of varying gas n barrel lengths.
    Some have required different buffers, but not due to malfs, only cycle speed. I could slow the carrier down so slow I could feel the swick-swack rocking of the cycle yet still feed rounds reliably. Never experienced anything like this.
    What kind of BCG? I assume you've tried soaking wet?

    I'm definitely in the minority here, but I use JPs polished springs exclusively in all of my rifles (rifle length if used with an A5.)
    Last edited by Brahmzy; 02-04-16 at 01:21.

  5. #15
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    Quote Originally Posted by Brahmzy View Post
    Strange, never had these issues in 5? 6? A5 equipped rifles of varying gas n barrel lengths.
    Some have required different buffers, but not due to malfs, only cycle speed. I could slow the carrier down so slow I could feel the swick-swack rocking of the cycle yet still feed rounds reliably. Never experienced anything like this.
    What kind of BCG? I assume you've tried soaking wet?
    The Noveske had a "regular" BCG.
    My DDM4 has a QPQ'ed BCG from Fathom Arms.
    It was clean and properly lubricated.
    The malfunctions occur when loading the weapon. Cycle speed, etc. are not in play.

  6. #16
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    Quote Originally Posted by bruin View Post
    Well, Vltor has the kit springs made to their specs, which IIRC match milspec. You're using a Vltor spring, so it is their problem. Give them a chance to examine the issue and make it right.

    If you want to try an aftermarket spring, the Sprinco Green is noticeably stronger and the AR10 Tubbs flatwire spring should be stronger and more linear as well. I recall BufordTJustice doing some testing on this.
    Vltor did not make Noveske's action spring. It's a mil-spec issue, in my experience. Or maybe a PMAG and Lancer issue? The A5 simply has more issues than the Carbine RE, and it highlighted the issue: The mil-spec M4 is "undersprung", in my experience.

  7. #17
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    With the Sprinco enhanced Blue action spring (or comparable extra-power spring) and an H2 orH3 buffer, unless there is a rigid obstruction present in the barrel extension, the rifle will reliably go into battery.
    -Mike Pannone
    http://www.defensereview.com/the-big...m4-unreliable/

  8. #18
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    Interesting. I'm basically using SpringCo Blues in all of my rifles, by using the slightly extra power JP polished springs in both carbine and rifle length (in the case of A5s). And I do not have malfs - just don't. Not when it comes to buffers/springs/action cycling etc. Clean or filthy. Plenty of other malfs between finger and brain, but that's another story.

  9. #19
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    There's some things I would look at.
    First the base combination need to have a proper port to mass relationship, excessive mass and under porting would not be good here.
    Make sure the spring is in good shape. If in any doubt it's not 100%, toss it. There's a lot of trash springs out their. Buy a Colt rifle action or green spring.
    There may be issues due to excessive drag. Mechanical drag can result from a stack up of many things and can be frustrating. Reducing mass and increasing spring isn't really a fix if you are trying to compensate for a drag issue that isn't supposed to be there in the first place.

  10. #20
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    Quote Originally Posted by tom12.7 View Post
    There's some things I would look at.
    First the base combination need to have a proper port to mass relationship, excessive mass and under porting would not be good here. Port is irrelevant. As is ammo, gas system, etc.
    Make sure the spring is in good shape. If in any doubt it's not 100%, toss it. There's a lot of trash springs out their. Buy a Colt rifle action or green spring. I have used Colt, and Vltor, in the Carbine and in the A5, respectively.
    There may be issues due to excessive drag. Mechanical drag can result from a stack up of many things and can be frustrating. Reducing mass and increasing spring isn't really a fix if you are trying to compensate for a drag issue that isn't supposed to be there in the first place.
    I do not know what would be dragging in the rifles. Whatever it is, the gun runs Wolf 55gr just fine...must not be dragging TOO much. I think the main thing is the magazine/bullet. That has too much drag for the mil-spec spring in my guns.

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