Witt Machine’s Ultra Light Fully Suppressed .300 Blackout Upper

New from genius designer Ken Witt is a fully suppressed .300 Blackout upper reciever for the AR-15. The receiver has a 16″ barrel with built in suppressor that spans about two thirds of the barrel length. The suppressor adds no extra length to the barrel and instead bleeds gas along the length of the barrel. The suppressor itself sits inside an attractive honey-comb style handguard, adding almost no bulk and no extra length to the upper receiver.


The suppressor is made with titanium parts and is user serviceable. Titanium keeps the weight VERY low and because it is an integral suppressor, the weight is distributed along the barrel, not hanging off the end of the gun ruining balance. The barrel sleeve is available with Polished Titanium, High Temp Graphite Black, or FDE Cerakote finishes.


The upper receiver, which comes with a Nickel Boron Treated bolt carrier group, weighs in at 4.4 lbs.

I thoroughly enjoyed shooting at Media Day with subsonic .300 BLK rounds. It is light, quiet well balanced and looks good. What more can you ask for? Price you say? At $1,500 (+ one tax stamp) it is price quite a lot lower than other integrally suppressed uppers.


James will be published a video about this upper later today. UPDATE: video below …

Steve Johnson

Founder and Dictator-In-Chief of TFB. A passionate gun owner, a shooting enthusiast and totally tacti-uncool. Favorite first date location: any gun range. Steve can be contacted here.


  • kregano

    Oh man, if it weren’t for the lack of a top rail, this would be a no-brainer for me.

    If the Hearing Protection Act passes & these guys produce enough to lower the price, I’d replace my current 16in .300 Blackout upper with one & bite the bullet to get an optic.

    • Sianmink

      It may pass but it would never get signed with this administration.

      • RP

        Next year. He’s thinking next year.

  • mzungu

    Curious at what the law say about producing a quite rifle? vs adding a suppressor. Is there a min Db. that a gun suppose to sound?

    On the other hand, a leaky barrel would lower you bullet velocity, wouldn’t it?

    • Jwedel1231

      The ATF says any device that lessens the report from a gunshot is considered a silencer. I don’t think there is a minimum dB requirement to be a suppressor (could you imagine!?! “Meter it, ATF agent. It only reduces by 20 dB, no stamp required!”)

      • mzungu

        Interesting. I was thinking that there is something there that says. “This gun is too quite, you need a stamp.” I thought there was someone who tried to sell a rifle with a build-in suppressor a while ago… but it was a no-go with ATF.

  • G0rdon_Fr33man

    The flaming one was tacky AF, but I like the honeycomb one!

  • Kyle

    I really like that weird looking hexagon hand guard. Are those for sale anywhere?

  • Ross

    I love my P-Mags but how on earth did they make a hexagonal style hand guard and not put a hex mag on it?

  • JumpIf NotZero

    Because who wants free float anyhow!?

    • AndyHasky

      Where does it say that? I see some daylight between the can and handguard

  • Pete

    The one issue with a suppressor inside the hand guard is that the hand guard can/will get very hot.

  • CommonCents

    love the integrated innovation these days, good bye expensive sbrs! how hot will the handguard get??? any idea on the decibel reduction?

  • jerry young

    looks good but why no provisions for a front sight? some people still prefer the old style iron sights, while the purple one does have picatinny rails I prefer barrel mounted sights over hand guard mounted