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Thread: Vltor A5 EMOD on a 14.5" middy???

  1. #11
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    Quote Originally Posted by bp7178 View Post
    What ammo are you using with your 14.5" DD mid-length?
    That's a good reference point, I should have mentioned it. Using .223, no higher power 5.56. Was specifically using PMC Bronze .223 for the above exercise. Using 5.56 was recommended as an alternative, but since I have boatloads of .223, that's what I have to make work if you know what I mean.

    Before the A5, I had both a VLTOR iMod carbine buffer / tube and a UBR with ST-T2, both carbine buffer configs on the 14.5 DD Mid functioned perfectly.
    Last edited by Ride5C2; 03-12-11 at 17:20.

  2. #12
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    I know what you mean about ammo. None of the shops around here carry anything good. It's all PMC Bronze, Wolf or Silver Bear.

    I have to order good stuff on my own.

    I just wouldn't run on the ragged edge of reliability for the sake of the almost mystic quest at eliminating recoil. While I admit I've been drawn to the A5 based on the statements of how much it helps in that reduction, at some point you're fighting for small incremental changes, sometime at the sake of function.

  3. #13
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    Quote Originally Posted by markm View Post
    Iraqgunz and I were at Vltor a few weeks back. In order to use the A5 on a 14.5 middy, you need to run the lighter buffer.

    Pretty much every other AR runs perfect with an A5.
    I used an A5 with a 6 oz buffer (not the normal 5 oz) with "Green" (ie stiffer than normal) Sprinco spring exclusively at a CTT Solutions class on a 14.5" DD midlength. No issues with Prvi Partizan ammo. No failures to lock back even with Wolf ammo.

    Depends on the shooter and ammo. The A5 is more forgiving than other buffer systems.

  4. #14
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    Quote Originally Posted by Ride5C2 View Post
    To someone's earlier post, it may depend on your setup. Let me first say that VLTOR's support for their products is fantastic and they've help me through my A5 adoption. With that said, the A5 buffer & tube did not work well on my 14.5 Mid Length (DD) reliably with the default A5 buffer. There just wasn't enough gas to cycle effectively and it short-stroked every 4th round or so.

    Using an A5 and a spare Carbine buffer, the folks at VLTOR walked me through various configs until I found the one that worked for me. This involved basically dis-assembling the A5 buffer to reduce weight until I had the right setup, very easy to do.

    The A5 starts with 4 weights inside, 2 Steel and 2 Tungsten. Here are some reference configs (using my postal scale, so your weights may vary):
    A5 Buffer: 5.3oz
    A5 Mod1: 4.5 oz (3 steel + 1 tungsten)
    ST-T2: 3.9 oz (reference point, haven't tried this with an A5 buffer)
    A5 Mod2: 3.6 oz (4 steel)
    Carbine: 2.9 oz

    Basically, just swapped out the weights from the Carbine buffer to the A5. With 'Mod1' above, it was much better and only short-stroked once in about 70 rounds. Mod2, 4 steel weights, was the sweet-spot for my 14.5 Mid and it now functions flawlessly.

    I've got a local 3 gun event in a couple of weeks, but after that I may try increasing weight (Spikes or Mod1 of the A5 above) and see what I get.

    Hope this helps. Again, I like the A5 and I'm sticking with it, VLTOR are great to deal with for customer support, so buy with confidence if you are leaning towards the A5.
    Very interesting. I was hoping that the lengths in a CAR size buffer and the A5 were the same size. I've been wanting to lighten my 5oz buffer in my main 3gun rifle just a bit to speed the bolt up just a little. I'm very used to it being a bit faster for shooting fast 3gun stages inside of 50yds. I'm thinking I'll try the A5 Mod 2 weight first and then move up if I don't like it.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  5. #15
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    Quote Originally Posted by Boss Hogg View Post
    Depends on the shooter GAS PORT and ammo. The A5 is more forgiving than other buffer systems.
    I basically agree. I'm a huge fan of the rifle buffer system and the A5 concept FOR SURE.
    Last edited by markm; 03-13-11 at 12:40.

  6. #16
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    My DD 14.5" middy cycles and holds bolt with standard A5 buffer, Colt spring, and PMC Bronze

  7. #17
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    It seems like there's a lot of guys having no problems with it but some who do. I think ammo is a big factor in how it's gonna perform. Some of you are having issues with it are shooting 223, but has anyone used it with 556?

  8. #18
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    I just put mine on within the last two weeks. I have about 800 rounds of xm193 and about 400 or so of .223, mixed. Never an issue and this is on an SR15. I tried my other SR15's upper as well as it has the smaller gas ports. Both ran perfect. I'll be putting this on all my guns soon. 10.5" through 16", carbine, muddy and KAC SR15 gas systems.

  9. #19
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    Reports of some 14.5" mids being the softest shooting guns ever makes me wonder about gas port size. In my shooting the 14.5" mid feels almost exactly the same as a 16" mid.

    I've shot every configuration we make with an A5 (standard weight) without any issue.

  10. #20
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    Quote Originally Posted by Todd.K View Post
    Reports of some 14.5" mids being the softest shooting guns ever makes me wonder about gas port size. In my shooting the 14.5" mid feels almost exactly the same as a 16" mid.

    I've shot every configuration we make with an A5 (standard weight) without any issue.
    Man... Iraqgunz and I were out yesterday shooting the BCM 14.5 middy with an H and H2 buffer... and it shot noticeably smoother than even a 20" A2.

    Iraqgunz also built a 16" BCM middy a month back... and it felt just right. The 14.5 is almost too smooth with .223 ammo... to the point that it's almost too much of a good thing.

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