Product Overview
The Dead Air KeyMo GOV HUB Adapter Upgrade Kit Suppressor Mount or Adapter is a suppressor-support component intended for a specific mounting, attachment, alignment, service, or configuration role. Suppressor accessories are highly system-specific, so the suppressor model, host firearm, barrel thread pattern, mounting standard, caliber, and manufacturer part number should all be confirmed before purchase.
Key Features and Specifications
- Product Type: Suppressor Mount or Adapter
- Mounting System: KeyMo
Why These Features Matter
Product Type: Suppressor Mount or Adapter
Correct identification matters because pistons, boosters, fixed mounts, front caps, muzzle devices, spacers, and adapters perform different jobs.
Mounting System: KeyMo
The mounting system determines how the suppressor attaches, locks, aligns, and is removed from the host firearm.
Choosing a Suppressor Mount or Adapter
Identify the suppressor-side interface first, then confirm the host-side thread pattern or muzzle-device standard.
HUB-compatible parts, direct-thread mounts, QD adapters, piston housings, and proprietary mounting systems can look similar while using different dimensions and locking methods.
Consider whether the mount changes suppressor length, weight, alignment, or host compatibility.
Confirm all parts in the stack are approved together. Multiple adapters can increase complexity and create additional interfaces that must remain tight and aligned.
Installation, Alignment, and Maintenance
Unload the firearm completely before installation or inspection. Follow both the firearm and suppressor manufacturer instructions.
Clean the barrel threads and mating surfaces, then install the component using the specified torque, shims, timing method, and thread treatment. Do not improvise with crush washers unless the manufacturer expressly permits them.
Verify suppressor alignment with the correct equipment before firing, especially after changing mounts, muzzle devices, adapters, front caps, or host firearms.
Inspect threads, tapers, locking surfaces, pistons, springs, caps, mounts, and fasteners for carbon buildup, wear, deformation, looseness, or damage. Replace any component that no longer locks or aligns correctly.
Best For
- Owners matching an accessory to the exact suppressor and host-firearm system
- Direct-thread, QD, HUB, piston, booster, 3-lug, or muzzle-device configurations identified by the manufacturer
- Users who will verify thread pitch, caliber, alignment, torque, and installation requirements
TRA Take
The simplest compatible mounting stack is usually the easiest to inspect and maintain. Add adapters only when they solve a real compatibility need.
Frequently Asked Questions
What type of suppressor accessory is this?
This product is classified as a suppressor mount or adapter based on the catalog information.
Is this accessory an NFA-regulated suppressor?
No. This listing is for an accessory or mounting component, not a serialized suppressor. Standard non-serialized accessories generally ship directly where legal.
Is professional installation recommended?
Professional installation or inspection is recommended whenever the part affects muzzle-device timing, suppressor alignment, mounting security, barrel threads, or safe projectile clearance.
How should alignment be checked?
Follow the suppressor manufacturer procedure and use appropriate alignment equipment before firing, especially after changing mounts, adapters, muzzle devices, caps, or host firearms.
Can similar-looking mounts be substituted?
No. Similar appearance does not confirm compatible dimensions, thread pitch, locking geometry, or caliber clearance. Use only manufacturer-approved combinations.
What is the manufacturer part number?
The manufacturer part number is DA428UPGRD.
Shipping and Installation Information
This listing is for a non-serialized suppressor accessory and generally ships directly where legal. It is not a suppressor and does not itself require an NFA transfer. Some muzzle devices, adapters, tools, or components may be restricted by destination or intended configuration. Confirm lawful use and follow all manufacturer installation, torque, timing, alignment, cleaning, and inspection instructions.
Why Buy From Tar River Arms
- Veteran-Owned Firearms Dealer
- Secure Online Checkout
- Nationwide Accessory Shipping Where Legal
- Local Pickup Available in Raleigh, North Carolina
- Professional Product Guidance and Gunsmithing Support
- Descriptions Focused on Actual Mounting and Compatibility Requirements
Product Identification
Manufacturer Part Number: DA428UPGRD
UPC: 810128164504
Use these identifiers to distinguish this configuration from similar mounts, adapters, pistons, caps, and muzzle devices.

