AAC 5.56 SD

AAC 5.56 SD Fast Attach Silencer
SKU: 102262

Availability: Contact for Availability




Advanced Armament Corp.

The ACC 556-SD is a fast attach silencer for 5.56mm hosts. With a design based on an earlier version of the best selling M4-2000™, the compact and lightweight 556-SD™ offers consumers feature-rich content and excellent value. The 556-SD™ uses the tried and true 51T Ratchet Mount™ fast-attach system that enables users to install or remove the silencer in seconds. The baffle core of the 556-SD™ features 100% Inconel® 718 and full circumferential fusion welding to provide a lifetime of use under the most demanding conditions.

All 556-SD's will now ship with an included 51T Flash Hider in 1/2x28.


  • Caliber: 5.56 mm (.223)
  • Sound Reduction: 31 dB
  • Weight: 18 oz
  • Length: 6.7"
  • Diameter: 1.5"
  • Finish: High Temperature Cerakote
  • Full Auto Rated: Yes
  • Materials: 718 Inconel, 316L SS
FFL Restrictions

FFL/SOT Requirements This item can only be shipped to a Licensed Federal Firearms/Special Occupational Tax Dealer.  Please our firearms shipping policy

Export Restrictions

Government Export Restriction This item may be regulated for export by the U.S. Department of State or the US Department of Commerce. Please see our Export Policy.

ITAR Restrictions

ITAR Product By adding to cart, I understand, acknowledge, and agree to the Export Policy. I am a US Person, and I do not intend to export this product.  Please see our Export Policy.

Additional Info

Additional Info

Manufacturer AAC
Model No


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