AAC 556-SD - USED
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The AAC 556-SD is a fast-attach 5.56 rifle suppressor based on the M4-2000, using AAC's 51T ratchet mounting system. The baffle core is 100% Inconel 718 with full circumferential welding, and the can is full auto rated. It is 6.7" long and 18 oz.
USED CONDITION
- Fresh black Cerakote coat applied, exterior looks great
- Round count unknown
SPECIFICATIONS
- Caliber: .223 / 5.56
- Length: 6.7"
- Diameter: 1.5"
- Weight: 1 lb 2 oz (18 oz)
- Decibel Reduction / Output: 31 dB
- Mount: AAC 51T Ratchet Mount
- Thread Pitch: Multiple thread pitches available (muzzle device)
- Materials: Inconel 718, 316L Stainless Steel
- Finish: Cerakote, Black (factory)
- Full Auto Rated: Yes
- Can Be Disassembled: No
- Warranty: Lifetime
WHAT'S INCLUDED
- Suppressor only
NOT INCLUDED
- 51T muzzle device (required to mount, sold separately)
- Suppressor pouch
- box
COMPATIBLE ACCESSORIES / MOUNTS (sold separately)
NOTE: This is the original 51T version of the 556-SD. It requires an AAC 51T muzzle device to mount. No muzzle device is included with this unit, so one must be sourced separately.
| Weight | 1lb 2oz |
|---|---|
| Manufacturer | AAC |
| Length | 6.7" |
| Diameter | 1.5" |
| Decibel Reduction / Output | 31db |
| Full Auto Rated | Yes |
| Mount | AAC 51T Ratchet Mount |
| Thread Pitch | Multiple Thread Pitchs Available |
| Color | Black |
| Finish | Cerakote |
| Materials | Inconel® 718, 316L SS |
| Can Be Disassembled | No |
| Warranty | Lifetime |
AFFORDABLE, QUALITY 5.56 SUPPRESSION
The Advanced Armament 556-SD is a fast attach suppressor for 5.56mm rifles. It's design is based around the popular M4-2000, both utalizing the 51T mounting system. The 556-SD offers great decible reducion and value, making it a popular choice for those looking for a more cost effection option. The 100% Inconel 718 baffle stack and full circumferential welding insures strength and durability even in the most demanding conditions. The 556-SD will last shooters a lifetie.
CAPITOL ARMORY'S OPINION
The AAC 556-SD is a more cost effective 5.56 suppressor than the M4-2000 and SR-5. While it's price point is reduced, the quality is not. One can think of the 556-SD as the "civilian" varient of their 5.56 lineup. Most shooters tend to use the 556-SD as a suppressor on a "backup" rifle, or one that may be put through rough conditions.
FEATURES
- 18 ounces
- 6.7" long
- 100% Inconel core
- 31 dB reduction
- 51T mounting system
- Rated for .223/5.56
INCLUDES
- Suppressor pouch



