Product Overview
The Dead Air RXD R-Series Flash Hider Front Cap 5.56mm Black 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 Front or End Cap
- Caliber or Bore: 5.56mm
- Finish: Black
Why These Features Matter
Product Type: Suppressor Front or End Cap
Correct identification matters because pistons, boosters, fixed mounts, front caps, muzzle devices, spacers, and adapters perform different jobs.
Caliber or Bore: 5.56mm
Caliber or bore clearance must support the intended cartridge and projectile diameter.
Finish: Black
Finish affects corrosion resistance, surface wear, appearance, and how easily carbon residue can be seen during inspection.
Choosing a Suppressor Front or End Cap
Match the cap to the exact suppressor series and caliber or bore listed by the manufacturer.
A smaller compatible bore opening may change flash or gas behavior, but it must still safely clear the projectile and remain approved for the suppressor.
Vented, non-vented, flash-hider, titanium, and other cap designs can serve different purposes and are not interchangeable across every suppressor family.
Inspect cap threads and seating surfaces before installation, and use the correct tool when the manufacturer requires one.
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
Front caps are precision suppressor components, not cosmetic covers. Model fit, bore size, thread engagement, and condition matter.
Frequently Asked Questions
What type of suppressor accessory is this?
This product is classified as a suppressor front or end cap based on the catalog information.
What caliber or bore is listed?
The catalog lists 5.56mm. Confirm the complete suppressor and host-firearm configuration supports the intended cartridge.
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 RXD206.
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: RXD206
UPC: 810128163132
Use these identifiers to distinguish this configuration from similar mounts, adapters, pistons, caps, and muzzle devices.

