The Dead Air Blast Shroud in 1-3/8-32 (Dead Air part no. DA464S) is the shroud-only version built to fit the DA429 KeyMo adapters. It diverts concussive blast forward, away from the shooter, on short-barreled rifles and pistol-caliber carbines. Dead Air machines it from 4140 heat-treated alloy steel with a black nitride finish. It is the lightest 1-3/8-32 option and is a purpose-built accessory for anyone running a KeyMo S mount.

Key Specifications

• The thread is 1-3/8-32, the size that matches the DA429 KeyMo S mount.
• The through bore is .458 caliber, which sets what it can clear.
• Material is 4140 heat-treated alloy steel, a tough choice for muzzle hardware.
• The finish is black nitride, which resists wear.
• Length is 1.87 inches, the shroud-only length.
• Weight is 2.7 ounces, the lightest of the three shroud-only models.
• The shroud diverts flash and concussion forward, away from the shooter.

Frequently Asked Questions

Which KeyMo adapter does it fit? It is made for the DA429 KeyMo adapters in 1-3/8-32. The DA428 HUB adapter uses a different thread.

Does it come with an adapter? No. This is the shroud on its own, and Dead Air sells the shroud with the DA429 KeyMo adapter as a separate kit.

What does it weigh? Dead Air lists 2.7 ounces, the lightest of its shroud-only models.

Buy the Dead Air Blast Shroud, 1-3/8-32, for DA429 KeyMo Adapters

Owners who already run a KeyMo S mount can add blast control without buying the adapter again. Order the shroud from our Lubbock, Texas gun shop for fast direct shipping, and see our Class 3 parts and accessories for related parts.