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AAC 556-SD



Advanced Armament Corporation’s 556-SD can is a fast-attach silencer for your 5.56mm host. A retooled unit based on its renowned AAC M4-2000 brethren, the compact (6.7”) and lightweight (18 ounces) 556-SD offers suppressor enthusiasts a versatile, feature-rich option. This suppressor employs AAC’s innovative 51T Ratchet Mount fast-attach system, enabling shooters to easily add/remove the can from the gun. (Which, in turn, results in more time destroying targets!) Regarding durability, the 556-SD sports a baffle core constructed of strong Inconel 718, along with a stainless steel body. We triple-dog dare you to push this silencer to the limit.

AAC, located in alluring Alabama, designs industry-leading firearms, suppressors, and accessories. With the inception of their full-auto rated 556-SD, the head of the class will not relinquish their position anytime soon.

*Perk Alert*

Hear ye, hear ye! All 556-SD silencer purchases now include an AAC 51T Blackout Flash Hider in 1/2x28! At this price, why not grab a couple more for those other AR's that your spouse doesn't know about? Or, check out the other available state-of-the-art options: AAC 51T Muzzle Brake and AAC 51T Brakeout Combo.

Rapid Fire

  • Full-auto rated!
  • Sound reduction: 34 dB
  • Build materials: stainless steel, Inconel 718
  • Finish: high-temp Cerakote™
  • Watch our performance testing and instructional videos for more intel (Videos tab)

What’s In the Box?


Specification Information

Caliber Rating 5.56mm (.223)
Length 6.7"
Diameter 1.5"
Weight 18 oz
Finish High Temperature Cerakoteā„¢
Full-Auto Rated Full-Auto Rated
Manufacturer AAC
Build Material 316L Stainless Steel, Inconel 718



2 Reviews For AAC 556-SD

  • special R1/5/2017

    great on my AR and on my 22mag. silencer shop great to deal with, and same can be said about artemis.

  • Dwight12/26/2016

    Everything works excellent and the process though seemed to take a little longer than usual it was worth it. I have and will continue to do business with Silencer Shop and Phil's Firearms. Shooting outdoors was much quieter then an indoor range to me. Also is excellent on a 22lr rifle.

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AAC 556-SD

SKU: AAC 102262

Great performance, great value.

Availability: In stock





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