JUST ANNOUNCED: The AAC Halcyon Modular Silencer

Advanced Armament Corporation is announcing the addition of a new silencer to their product lineup. Dubbed the Halcyon, the new rimfire suppressor joins the growing trend of modularity by providing the shooter with two configuration options.

In its full size, the Halcyon is a little over five inches long and weighs in a hair over six ounces. In the short configuration, the silencer is a scant 3.41″ long and weighs 4.5 ounces. In addition, the endcap as well as the mounts can be adapted to swap to different thread patterns. Plus, no worrying about unscrewing your mount when removing the silencer from your host. Pretty cool.

MSRP for the Halcyon is $450 with a street price estimated to be around $400.

We will bring you more information as it becomes available.

AAC Halcyon


AAC Halcyon Modular Silencer Specifications:

  • Tool-less takedown and shielded baffles deliver best-in-class performance and ease of disassembly for cleaning and maintenance
  • Can be configured as either a compact or full size silencer in less than a minute by hand, no tools required One tax stamp, two silencer configurations
  • Titanium K-baffles and main tube combined with an 7075-T6 grade aluminum front tube
  • Shielded baffles are keyed to ensure repeatable alignment of the ports to eliminate point of impact shift
  • Interchangeable adapters allow users to change thread pitch to accommodate multiple host firearms Cerakote Finish 22LR Full Auto Rated
  • CALIBER RATINGS: .17 HMR, .22LR, .22 WIN. MAG, 5.7 X 28mm

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LE – Science – OSINT.
On a mission to make all of my guns as quiet as possible.
Twitter: @gunboxready
Instagram: @tfb_pete


  • iksnilol

    Poorly executed verdion of the A-tec rimfire.

    • ostiariusalpha

      In what way? The Halcyon is more compact, has more features, and it may weigh a couple dozen grams more, but it’s probably pretty robust. I mean, if I was choosing between the two, I’d just get the CMM-4 and call it a day, but that’s no knock on the Halcyon.

      • iksnilol

        More modular.

        • ostiariusalpha

          From what I’ve read, the A-Tec has only two thread patterns and is a b–ch to take apart.

          • iksnilol

            Yeah, but you have more modules. And you can get less/more modules to tune to your use. With the Halcyon you’ve got standard and short config and that’s it.

          • ostiariusalpha

            That’s true, there is a definite advantage there.

          • iksnilol

            Still I wish I could get my hands on the Halcyon. It’s somewhat inexpensive. Woule be a cool comparison and even cooler convo piece.

  • Louis C

    “MSRP for the Halfon is $450 with a street price esotimated toj be”

    • Pete – TFB Writer


  • datimes

    I’m excited about waiting a year or more to take delivery.

    • Pete – TFB Writer

      The NFA process sucks. The only way to do it right now is to buy one a month until they start rolling in regularly.

  • nuartyboy

    “Swarp” to different thread patterns? Spell check much?

    • Pete – TFB Writer

      It’s a new technical term that you obviously aren’t high speed enough to use. In fact it’s so top secret, I’m going to change it so no one else knows about it!

  • thedonn007

    I would have preferred that both tubes were titanium. I would to be able to drop the whole thing into an ultrasonic cleaner.

  • Gary Kirk

    What’s the NRR? Kind of interesting, but need to know more before I jump.. Don’t have any rimfire suppressors yet, but if I find the right one I might just have to thread my 10/22’s barrel..

  • After using the 9M, I’m expecting good results from this new unit 😀 Like that it’s 5.7 rated too