AAC 556-SD
Great performance, great value.
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?
- AAC 51T Blackout Flash Hider (Free!)
- Black nylon utility pouch with closure and belt loop hitch for personal transport
- User manual
Manufacturer | AAC |
---|---|
Weight | 18 oz |
Warranty | Lifetime Warranty |
Videos
FREQUENTLY BOUGHT TOGETHER
- AAC 556-SD
- NFA Tax Stamp$205.00
- Single Shot NFA Gun Trust$24.95
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Total Price $757.45
Compare
![]() AAC 556-SD |
![]() SureFire SOCOM556-SB2 |
![]() CMMG DefCan 2 Ti | |
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Rating |
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Weight | 18 oz | 17 oz | 13.1 oz |
Length | 6.7" | 6.2" | 7" |
Diameter | 1.5" | 1.5" | 1.5" |
Caliber | 5.56mm (.223) | 5.56mm (.223) | 5.56mm (.223) |
Caliber Rating | 5.56mm (.223) | 5.7x28 FN | 5.56mm (.223) | 5.56mm (.223) |
Color | Black | NA | Black |
Finish | High Temperature Cerakote™ | High Temperature Cerakote™ | Cerakote™ |
Build Material | 316L Stainless Steel | Inconel 718 | Inconel 718 | Titanium | Inconel 718 |
Sound Reduction | 31dB on 16” AR, Remington 55grn MC | NA | 32 dB (from manufacturer) |
Mount Style | AAC 51T QD Mount | Surefire SOCOM QD Mount | Direct Thread |
Thread Pitch | NA | NA | 1/2x28 |
User Serviceable | No | No | No |
Full-Auto Rated | Full-Auto Rated | Full-Auto Rated | Full-Auto Rated |
Min 556 Barrel | NA | 7" | 10.5" |
Warranty | Lifetime Warranty | Lifetime Warranty | Lifetime Warranty |
Min 300Blk Barrel | NA | NA | NA |
Min 762 Barrel | NA | NA | NA |
Min Magnum Barrel | NA | NA | NA |
Product Status |
ONLY 5 LEFT |
IN STOCK
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ONLY 4 LEFT |


