Home » Shop » Daniel Defense SG-556, Suppressor, .223 Remington/5.56 NATO, 7″ Length, 1.75″ Diameter
DD SOUNDGUARD SUPPRESSOR 556NATO BLK

$831.00

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🔇 No Form 4 needed — since October 9, 2026 a suppressor transfers on a standard Form 4473 and background check, with no tax stamp or wait. Texas buyers can complete it with us; out-of-state orders ship to an SOT dealer in your state. How it works.
Product Code: DD06-140-04249 Categories: , Brand:

Daniel Defense SoundGuard 5.56 NATO suppressor, black — DD’s factory 5.56 suppressor designed for DDM4V7, MK18 SBR, and AR-15 platform hosts. Factory-engineered for DD’s 5.56 rifle lineup. $0 NFA stamp under OBBBA.

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Product Description

Update, October 9, 2026: ATF no longer requires a Form 4, tax stamp, fingerprints or registration for suppressors, short-barreled rifles, short-barreled shotguns or AOWs. They now transfer on a standard Form 4473 with a background check. Anything below that mentions a Form 4, a wait or a tax stamp was written before this change. What changed

The Daniel Defense SoundGuard 5.56 NATO suppressor is the factory-matched suppressor for DD’s 5.56 rifle and SBR lineup — the MK18 SBR, DDM4V7, DDM4V11, and any DD firearm chambered in 5.56 NATO. DD designed the SoundGuard 5.56 alongside its rifles: the bore geometry, baffle spacing, and end cap thread pitch were developed with DD’s specific gas port positions, barrel lengths, and buffer system specifications as the design inputs. The result is a suppressor that integrates with DD’s 5.56 hosts more naturally than any third-party option, providing reliable function and optimal sound reduction across DD’s full 5.56 barrel length range from the 10.3″ MK18 to the 18″ RECCE series.

DD SoundGuard 5.56 Specifications

Spec Detail
Caliber Rating 5.56 NATO / .223 Remington
Finish Black
Native Pairing DDM4V7, MK18 SBR, DDM4V11, DD RECCE series
NFA Class Suppressor — no Form 4 required
Made in USA Daniel Defense, Black Creek, GA

Daniel Defense SoundGuard Suppressor Technology

Daniel Defense engineered the SoundGuard line after years of building firearms that customers paired with third-party suppressors — and recognizing that a suppressor designed alongside a specific firearm platform outperforms one designed generically. SoundGuard suppressors are built with the same materials and tolerances that DD applies to its rifle barrels: milspec-qualified aluminum and titanium, precise machining, and corrosion-resistant finishes. The SoundGuard line covers Daniel Defense’s primary firearm calibers — 5.56 NATO, 6mm ARC, 300 BLK/7.62, and 9mm — so DD rifle, pistol, and SBR owners can run a factory-matched suppressor system.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

FAQ — DD SoundGuard 5.56 NATO

Does the SoundGuard 5.56 work on non-DD AR-15s?

Yes — the SoundGuard 5.56 works on any 5.56 AR-15 with compatible muzzle threading. The factory match to DD rifles means it’s optimized for DD’s specific gas port positions and buffer weights, but it functions reliably across the 5.56 AR-15 ecosystem.

What is the NFA transfer process?

Form 4, ATF background check, $0 stamp (OBBBA), about two weeks or less wait.

First NFA purchase? Here is how buying one works now.

Additional information

Weight 2.000 lbs
Brand Daniel Defense
Caliber

,

Finish

Mount Type

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Out of stock — but we have these .223 Rem cans on the shelf right now

Want this exact one? We can often get it in. Call (817) 393-4000 and we will tell you the real lead time, or browse everything in stock.

Buying a suppressor now: a Form 4473 and a background check. No Form 4.

Since October 9, 2026, ATF no longer requires a Form 4, tax stamp, fingerprints, photos or registration to buy a suppressor. It transfers like any other firearm: you fill out a Form 4473, pass a NICS background check, and it is yours. No months-long wait.

  • Texas buyers: suppressors are legal under Texas law. Western Sport has been an SOT / Class III dealer since 2007.
  • Outside Texas: we ship to an SOT dealer in your state, who completes the 4473 with you. Your state’s law still decides — some states ban suppressors, and some only allow ones registered with ATF.
  • Want it registered anyway? ATF still accepts a voluntary Form 4. Ask us.

What ATF changed on October 9, 2026
How buying a suppressor works now
Questions? Send us a message.

In Stock Now — Comparable Options

This item is out of stock. These are on the shelf today and ship or transfer the same way. Not sure which is the right swap? Call 817-393-4000 and we will tell you straight.

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