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Advanced Armament Company (AAC) Halcyon 5.7mm Suppressor - 1/2x28


In stock

FFL & SOT Required Before Shipping.

Please have your dealer email a copy of their FFL & SOT to [email protected] or fax it to 253-218-2998, referencing your name and order number.


This product ships from another warehouse location and is not available at our retail store. Orders will take an additional 2-3 business days for processing.


The new Halcyon from AAC is everything you want from a rimfire silencer and nothing you don’t. Go from long to short configurations in seconds, and easily disassemble without any tools required. No smoke, no mirrors, no unfounded claims — best in class, period.

  • Overbuilt for maximum performance and durability without the excess weight
  • Features indexed, shielded Titanium K-baffles
  • Modular design is 22 LR full-auto rated, 5.7 rated



  • Calibers:
    • 17 HMR
    • 22 Long Rifle
    • 22 Win Mag
    • 5.7x28mm
  • Weight: Full (6.4 oz) / Compact (4.5 oz)
  • Length: Full (5.8") / Compact (3.41")
  • Diameter: 1.12"
  • Materials: 17-4PH T6 Titanium
  • Finish: Black PVD
  • Attachment: Direct thread
  • Reduction: 42 dB*
  • S.P.L: 114 dB*

*Walther P-22, Remington Standard Velocity


More Information
SKU 64283-DS
Product Type Suppressor
Manufacturer Advanced Armament Company (AAC)
Thread Pitch 1/2x28
Color Black

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