AAC 556-SD
means we handle all ATF paperwork 
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 sil... Read More
| Manufacturer | AAC |
|---|---|
| Weight | 18 oz |
| Warranty | Lifetime Warranty |
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 AAC 556-SD |
 SureFire SOCOM556-SB2 |
 CMMG DefCan 2 Ti-QD | |
|---|---|---|---|
| Rating |  |
|
|
| 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 | Bi-Lock |
| Thread Pitch | NA | NA | NA |
| User Serviceable | No | No | No |
| Full-Auto Rated | Full-Auto Rated | Full-Auto Rated | Full-Auto Rated |
| Min 556 Barrel | NA | 7" | 10.25" |
| 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 |
IN STOCK
|
ONLY 1 LEFT |
BACKORDER
|
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