Dead Air KeyMo HUB Quick-Detach Suppressor Adapter – DA428
The Dead Air DA428 KeyMo HUB Adapter is a quick-detach suppressor mounting accessory designed for compatible suppressors featuring the industry-standard 1.375x24 HUB rear mounting interface.
Part of Dead Air's popular KeyMo mounting system, the DA428 provides compatibility with approved KeyMo muzzle brakes and flash hiders, offering a versatile mounting solution for suppressor owners using the KeyMo ecosystem.
Whether replacing an existing mounting adapter or selecting accessories for a compatible HUB-equipped suppressor, the DA428 is a genuine Dead Air component designed specifically for the KeyMo system.
Industry-Standard 1.375x24 HUB Compatibility
The DA428 features the common 1.375x24 HUB mounting thread, also frequently identified as 1-3/8x24, Bravo, or Omega-pattern threading.
This widely adopted rear mounting interface is found on select suppressors from Dead Air and other manufacturers.
Dead Air identifies the DA428 as the KeyMo HUB Adapter, also known as the KeyMo R-Series or Nomad/Omega adapter.
Manufacturer-documented applications include select models in the following suppressor families:
- Dead Air Nomad Series – compatible HUB-equipped configurations.
- Dead Air Primal – compatible mounting configuration.
- SilencerCo Omega 300 – compatible mounting interface.
- SilencerCo Hybrid 46 – compatible configurations.
- YHM Turbo and Resonator – select HUB-compatible models.
- Energetic Armament VOX – compatible configurations.
- Other HUB Suppressors – subject to manufacturer confirmation.
Important: HUB thread compatibility alone does not guarantee compatibility with every suppressor model. Confirm the manufacturer's approved mounting system, internal clearance, and current compatibility guidance before purchasing.
Dead Air KeyMo Quick-Detach Mounting System
Dead Air's KeyMo quick-detach system is designed around a dedicated suppressor adapter and compatible KeyMo muzzle devices.
The DA428 uses Dead Air's mechanical locking interface, offering a positive mounting connection within the KeyMo ecosystem.
The system is popular among suppressor owners who prefer a dedicated quick-detach mounting arrangement rather than a conventional direct-thread-only configuration.
Compatible KeyMo muzzle devices are sold separately. The DA428 is the suppressor-side adapter, not a muzzle brake or flash hider.
KeyMo vs. KeyMicro, Xeno & Other Suppressor Mounts
Dead Air offers several suppressor mounting systems, and selecting the correct adapter is essential.
- KeyMo DA428: HUB 1.375x24 rear interface for compatible suppressors using the KeyMo mounting system.
- KeyMo DA429: Different adapter configuration intended for compatible SilencerCo Saker-pattern interfaces.
- KeyMicro DA451: Different mounting adapter intended for specific Dead Air suppressor configurations.
- Dead Air Xeno: Separate mounting family using its own compatible adapters and muzzle devices.
The DA428 should not be assumed interchangeable with Saker, KeyMicro, Xeno, or proprietary suppressor mounting systems.
Explore Dead Air KeyMo Muzzle Brakes & Flash Hiders
Pete's Pillars is expanding its selection of suppressor accessories, mounting adapters, and muzzle devices. Explore related Dead Air products and compatible accessory families.
Individual muzzle devices have specific thread dimensions, bore clearances, and compatibility requirements. Always use manufacturer-approved combinations.
Suppressor Accessories Without the Suppressor
Pete's Pillars focuses on quality firearm components and accessories, including suppressor mounting adapters, muzzle brakes, flash hiders, and related hardware.
Our accessory selection is intended for customers shopping for compatible components to support their existing or planned suppressor systems.
Complete suppressors are not included or sold as part of this listing. The DA428 is a separate mounting accessory.
Features & Benefits
- Genuine Dead Air: Original manufacturer KeyMo mounting accessory.
- HUB Thread Standard: 1.375x24 (1-3/8x24) rear interface.
- KeyMo Quick-Detach System: Compatible with approved KeyMo muzzle devices.
- Broad Suppressor Compatibility: Supports select Dead Air and third-party HUB configurations.
- Dedicated Mechanical Locking Interface: Part of Dead Air's established KeyMo mounting family.
- Replacement or Conversion Accessory: For manufacturer-approved suppressor configurations.
- Adapter Only: Muzzle brake, flash hider, and suppressor sold separately.
Product Specifications
- Manufacturer: Dead Air Silencers
- Manufacturer Part Number: DA428
- Product: KeyMo HUB Quick-Detach Suppressor Adapter
- Mounting Family: Dead Air KeyMo
- Suppressor-Side Thread: 1.375x24
- Alternative Thread Designations: 1-3/8x24 / HUB / Bravo / Omega Pattern
- Muzzle-Device Interface: Compatible Dead Air KeyMo Pattern
- Configuration: HUB / R-Series Adapter
- Color: Black
- Includes: One Dead Air DA428 KeyMo HUB Adapter
- Suppressor Included: No
- Muzzle Device Included: No
Compatibility Notice: Confirm the exact suppressor model, rear mounting interface, and manufacturer-approved muzzle-device compatibility. This adapter is not universally compatible with every HUB-threaded suppressor or every Dead Air mounting system.
The Pete's Pillars Difference
Pete's Pillars supplies genuine components from established manufacturers alongside our own American-made precision rifle accessories.
Our growing suppressor-accessory selection focuses on mounting adapters, muzzle brakes, flash hiders, and complementary hardware for customers seeking quality components without purchasing a complete suppressor.
Genuine components. Real parts. Made by real people.
