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Thread: A5 EMOD system on a STD carbine

  1. #1
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    A5 EMOD system on a STD carbine

    Anyone have feedback running with a 16" carbine gas system - as these are all 'overgassed', how is this helpful?


    http://www.vltor.com/emod-a5.html

    I suppose you eat some weight.

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    The A5 buffer system will help almost every carbine gas upper. Not all 16s are overgassed, but many are.

    You don't need to run the EMOD to run the A5 buffer system. Any carbean stock works.
    "You people have too much time on your hands." - scottryan

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    Sample of one...

    I recently built a lower with the A5.

    The upper I tested it with was a Battlecomp equipped S&W MP15. The gun is likely overgassed, but it normally runs very well with a H2 buffer and a Brownells CS carbine action spring. I didn't notice any significant recoil differences when shooting this upper with different lowers side by side. The A5 was definitely smoother throughout the cycle and the lower with the H2/standard carbine RE was a little harsher initially, but smoothed out after the spring started to compress. However the recoil was similar.

    Well, I like to tinker, so I opened up the A5 buffer and exchanged a steel weight for a tungsten weight. The tungsten weight was of the lighter and cheaper tungsten alloy (not mil-spec) so the resulting buffer is probably not as heavy as a true A5H3, but man, this combination made this gun feel smooth and light in recoil. I didn't have any shortstroking issues at all and it locked back on 10 different empty mags, multiple times.
    Last edited by uwe1; 11-18-11 at 22:16.

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    So to a complete novice, what does one order to make "it" an A5? Just longer extension, different buffer, spring? Thanks.

    I have an upper. Have a lower except for stock, so if this is a better system, I'd like to consider it.

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    Hell yeah it's better. If you have a stock, just go to Bravocompanyusa or Vltor's site and order the RE (tube), end plate, castle nut, spring, and buffer.

    I think it comes in a kit... but it's been a few months since I ordered one. Then you can put whatever Stock you want on it.
    "You people have too much time on your hands." - scottryan

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    How do I know if my gun is "overgassed"? I run a Colt 6940.

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    Quote Originally Posted by m4brian View Post
    So to a complete novice, what does one order to make "it" an A5? Just longer extension, different buffer, spring? Thanks.

    I have an upper. Have a lower except for stock, so if this is a better system, I'd like to consider it.
    You need the Vltor A5 receiver extension:

    http://www.vltorstore.com/products/A...sion-Tube.html

    The A5 spring and buffer kit:

    http://www.vltorstore.com/products/A...uffer-Kit.html

    The A5 has a longer than carbine receiver extension, uses the rifle length spring, and has the A5 buffer which is longer than the carbine buffer, but shorter than the rifle buffer.

    You can put any stock on it you want. If you prefer the Emod Stock, then get this:

    http://www.vltorstore.com/products/A...Stock-Kit.html
    Last edited by uwe1; 11-18-11 at 22:02.

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    Quote Originally Posted by Ronin64 View Post
    How do I know if my gun is "overgassed"? I run a Colt 6940.
    I don't believe it's possible to know that your gun is "overgassed" unless you pull off the gas block and measure the size of the gas port.

    Most commercial grade guns are given larger ports to enable them to cycle reliably with lower powered .223 ammo. However, if one is shooting predominantly 5.56, this will cause the gun to cycle more violently.

    Colts are generally going to be made correctly, adhering to the TDP, so it isn't as likely that your gun is "overgassed", if it still has the original 6940 barrel and hasn't suffered any port erosion.

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    One is a DD M4, the other a BCM LW. Don't expect they are necessarily overgassed, but DOES the A5 compensate for added recoil and wear as some report?
    Last edited by m4brian; 11-18-11 at 22:34.

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    Quote Originally Posted by m4brian View Post
    One is a DD M4, the other a BCM LW. Don't expect they are necessarily overgassed, but DOES the A5 compensate for added recoil and wear as some report?
    It's just a smoother, more reliable cycle. The wear on the gun is negligible.
    "You people have too much time on your hands." - scottryan

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