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Thread: RFI regarding SilencerCo Specwar 5.56 K and backpressure/blow back

  1. #11
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    Quote Originally Posted by trooper84 View Post
    Update:
    Yesterday I was able to shoot a Specwar 556 K on my SBR. It seemed to me to be on par (at least to my ear) with my Specwar 762. I didn't notice any major gas blowback, especially when using my friend's Gemtech SBC. My new SBR is a 11.5" BCM factory upper and the lower has the A5 buffer setup running an A5H2 buffer. The question I have is when using both the Specwar 762 and the 556 K, ejection was at the 2 o'clock and only about 2 feet away in the suppressed setting. When switching to the unspressed setting, the casings barely cleared the ejection port and dropped at my feet. If I end up going this direction, do I need to run an even heavier buffer in my A5?
    Oh, ammo was dept. issue training ammo, Lake City M193
    I'm not an expert but it seems to me that you would need to run a lighter buffer. Was it locking back on empty mags?

  2. #12
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    It was locking back reliably with all the mags I tried...

  3. #13
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    Quote Originally Posted by trooper84 View Post
    Update:
    Yesterday I was able to shoot a Specwar 556 K on my SBR. It seemed to me to be on par (at least to my ear) with my Specwar 762. I didn't notice any major gas blowback, especially when using my friend's Gemtech SBC. My new SBR is a 11.5" BCM factory upper and the lower has the A5 buffer setup running an A5H2 buffer. The question I have is when using both the Specwar 762 and the 556 K, ejection was at the 2 o'clock and only about 2 feet away in the suppressed setting. When switching to the unspressed setting, the casings barely cleared the ejection port and dropped at my feet. If I end up going this direction, do I need to run an even heavier buffer in my A5?
    Oh, ammo was dept. issue training ammo, Lake City M193
    Yes, explore a SprinCo Green spring and an A5H3 or A5H4 buffer. You're getting the weak extraction on the unsuppressed setting because it's happening too fast.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

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