Daniel DefenseSoundGuard SG-556
5.56mm / .223 suppressor · HUB 1.375x24 interface · specs and compatibility from the manufacturer
Notable features
- HUB Compatible
- Low Backpressure
- Full-Auto Rated
length
7″
weight
22oz
MSRP
$831
length
7″
weight
22oz
calibers
5.56
material
Steel
interface
HUB 1.375x24
MSRP
$831
- Overall length
- 7″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 2.5″–9.75″
- Median
- 6.12″
- Diameter
- 1.75″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 0.98″–2.2″
- Median
- 1.57″
- Weight
- 22 oz
- Class
- 5.56mm / .223
- n
- 328
- Range
- 1.7 oz–27 oz
- Median
- 13 oz
- Material
- Stainless Steel
- Max caliber
- 5.56mm / .223
- Base interface
- HUB 1.375x24
- Front cap
- Fixed
- Backpressure
- Low
- Full-auto rated
- Yes
- MSRP
- $831
Longer than most 5.56mm / .223 suppressors
Length compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Wider than most 5.56mm / .223 suppressors
Diameter compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Heavier than most 5.56mm / .223 suppressors
Weight compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
- Base interface
- HUB 1.375x24
- Front cap
- Fixed
The HUB 1.375x24 is an open standard: 415 mounts and 818 muzzle devices in our catalog fit this suppressor, including Daniel Defense SoundGuard Direct Thread (1/2x28), AAC 51T S.T.A.M.P. Mount and AB Suppressor AB Raptor Adapter. You aren't locked into one manufacturer's parts.
Which ones fit your barrel and host?
Check in the BuilderManufacturer claim
- Every SG-556 suppressor is stamped with the Daniel name, which means it’s backed with a 100% Satisfaction Guarantee.
- Significantly lowers impulse noise levels, providing hearing protection for the shooter.
- Features a patent-pending gas-flow dynamic system that directs most gases forward rather than back toward the shooter, reducing toxic gas blowback.
- Incorporates a patent-pending baffle stack combined with a proprietary coating on internal parts that reduces flash signature to virtually zero.
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- Patent-pending gas-flow pathing stabilizes rounds to ensure extreme accuracy with minimal point-of-impact shift.
- Attaches and detaches in seconds via a direct-thread mounting adapter utilizing the industry-standard HUB 1.375-24 UNS interface.
- The HUB 1.375-24 UNS mount standard allows compatibility with a variety of other muzzle attachments, such as Keymo and ASR.
- Daniel SoundGuard Powered by cutting-edge gas-flow dynamics that eliminate over-gassing and direct most gasses forward, not back in a shooter’s face.
- It attaches/detaches in seconds via an included adapter utilizing the HUB standard 1.375-24 UNS, which provides secure attachment while adding minimal length and allowing for the use of a variety of other muzzle attachments, such as Keymo and ASR.
- Constructed of lightweight but extremely durable stainless steel for both the tube and baffle stack, chosen to avoid weighing down the barrel.
- Internal parts feature a proprietary material coating that contributes to near-zero flash signature reduction.
- State-of-the-art technology significantly lowers impulse noise levels, protecting against hearing loss, while a patent-pending baffle stack and proprietary coating on internal parts reduce a firearm’s flash signature to virtually zero.
- The SG-556 is compatible with .223 and 5.56mm caliber firearms and is constructed of lightweight but extremely durable stainless steel, so you don’t have to baby it, and it won’t weigh down your barrel.
- Backed by a 100% Satisfaction Guarantee and carries the Daniel Defense brand stamp as a mark of quality assurance.
- The SG-556 is optimized for .223 Rem and 5.56mm caliber firearms.
- Includes a mounting adapter utilizing the HUB 1.375-24 UNS standard for direct-thread attachment.