Home » Shop » Dead Air Armament Blast Shroud .458 Win Mag Suppressor
Dead Air Armament Blast Shroud .458 Win Mag Suppressor

$269.00

🔇 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: ORN-DEADDA464 Category: Brand:

Dead Air Armament Blast Shroud is a .458 Win Mag suppressor offered with the DA429 Keymo adapter, 1-3/8-32. It is for hunters and big-bore rifle owners who shoot .458 Win Mag and want a Dead Air Armament suppressor for it.

  • Brand: Dead Air Armament
  • Model: Blast Shroud suppressor
  • Caliber: .458 Win Mag
  • Paired with DA429 Keymo adapter, 1-3/8-32
  • Manufacturer part number: DA464
  • UPC: 810128161718

SKU: ORN-DEADDA464 · Mfr part #: DA464 · UPC: 810128161718

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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 Dead Air Armament Blast Shroud is a .458 Win Mag suppressor, sold under manufacturer part number DA464. It is built for one of the larger traditional big-bore rounds, so it fits a narrow group of rifles and the people who shoot them.

The Blast Shroud comes paired with the DA429 Keymo adapter, marked 1-3/8-32. That adapter is part of how this suppressor attaches to a host, so check your muzzle setup before you order. The other specs we state for this model are the caliber, the part number and the UPC, 810128161718.

Who it suits

This suppressor suits shooters with a rifle chambered in .458 Win Mag. That usually means hunters who carry a heavy-caliber rifle for large game, or owners who like to shoot big-bore rifles at the range. If your rifle is in a different caliber, this is not the right model.

To use it, you need a .458 Win Mag host rifle with a muzzle device or mount that works with the Keymo adapter. Many owners also add a sturdy sling, a good set of ear protection and a cleaning kit sized for the bore. Dead Air Armament is the maker, so ask us if you want help confirming a mount for your rifle before you commit.

Dead Air Armament Blast Shroud .458 Win Mag Suppressor Specifications

Caliber .458 Win Mag
UPC 810128161718
Mfr Part # DA464

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. See our NFA guide for the current federal rules; state law still applies.

Frequently Asked Questions

Q: What caliber is the Dead Air Armament Blast Shroud?

A: The .458 Win Mag. It is made for rifles chambered in that cartridge.

Q: What adapter goes with the Blast Shroud?

A: The DA429 Keymo adapter, marked 1-3/8-32. It is the adapter named with this model.

Q: What is the manufacturer part number for the Blast Shroud .458 Win Mag?

A: DA464. The UPC is 810128161718.

Q: Who is the Blast Shroud for?

A: Owners of .458 Win Mag rifles. It is a big-bore suppressor, so it does not suit rifles in other calibers.

Warranty and Manufacturer

Covered by the Dead Air Armament factory warranty; warranty terms come from Dead Air Armament.

Additional information

Brand Dead Air Armament
Caliber

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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.

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