FAXON STAINLESS STEEL EXTENDED PLAN B TO HUB ADAPTER
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FAXON STAINLESS STEEL EXTENDED PLAN B TO HUB ADAPTER
FAXON STAINLESS STEEL EXTENDED PLAN B → HUB ADAPTER — 17-4 PH
Extended-length adapter for improved clearance and reach with Plan B muzzle devices. The Faxon Extended Plan B → Hub Adapter (FF-MD-SIL-HUB-PB-03) is precision-machined from 17-4 PH stainless steel and designed to provide a secure, repeatable interface from MuzzLok® Plan B Compatible devices (and similar Plan B muzzle devices) to hub-mount suppressors such as Faxon HARMONIX® and CORESYNC®. The extended length offers additional reach for better suppressor positioning and clearance on certain setups.
Key Features
- Adapter Type: Extended Plan B → Hub Mount Adapter
- Material: 17-4 PH Stainless Steel (H1025)
- Precision Threads: 1.375-24 UNS-2A (Hub) & 29/32-24 UNEF-2B (Plan B)
- Finish: Nitride
- Extended Length: Provides additional reach for improved suppressor clearance and positioning
- Compatibility: Interfaces Plan B muzzle devices to hub-mount suppressor hubs (ex. HARMONIX® & CORESYNC®)
- Origin: Designed and manufactured in the USA by Faxon Firearms
Why Use the Faxon Extended Plan B → Hub Adapter?
This extended adapter allows shooters to take advantage of the fast, repeatable timing and secure lockup of MuzzLok® Plan B-style (and similar) muzzle devices while attaching modern hub-mount suppressors. The added length improves clearance and positioning on certain rifle configurations, maintaining timing, alignment, and the robust mechanical connection required by hub-mount systems.
Benefits
- Extended reach: Provides additional length for better suppressor clearance and positioning on select setups
- Repeatable mechanical interface: Maintains timing and alignment between Plan B devices and hub mounts
- Precision thread geometry: Minimizes wobble and ensures concentricity for consistent performance
- Durable construction: 17-4 PH stainless for corrosion resistance and long service life
Technical Specifications
| Part Number | FF-MD-SIL-HUB-PB-03 |
|---|---|
| Material | 17-4 PH Stainless Steel (H1025) |
| Hub Threads | 1.375-24 UNS-2A |
| Plan B Threads | 29/32-24 UNEF-2B |
| Hex / Grip Flats | 1.031" hex |
| Finish | Nitride |
| Country | Made in USA — Faxon Firearms |
Quick Installation / Use Notes
Always follow safe firearms handling practices. Ensure the firearm is unloaded and safe before installing or removing muzzle devices or adapters.
- Install and time your Plan B muzzle device per the device manufacturer's instructions.
- Thread the Extended Plan B → Hub Adapter onto the Plan B device or timing nut until hand-tight, then torque to adapter/suppressor specs.
- Attach the hub-mount suppressor to the adapter hub according to the suppressor manufacturer's instructions (HARMONIX® / CORESYNC® when applicable).
- Verify concentricity, clearance, and point-of-impact. Re-time if required for your rifle/suppressor setup.
FAQ
What does the Extended Plan B → Hub Adapter do?
What material is the adapter made from?
What threads does it use?
Any special installation torque?
Where can I get help?
Notice: MuzzLok® is a Faxon Firearms trademark.
Disclaimer: Faxon Firearms components are designed for compatibility with industry-standard Plan B-style and 1.375-24 UNS (HUB) mounting interfaces. Always confirm dimensions and fitment before installation as tolerances may vary between manufacturers. Some suppressor manufacturers may not honor their warranty when third-party adapters or mounting systems are used. Verify compatibility and warranty terms with your suppressor manufacturer before installation or use.
Trademark attribution: “Plan B” is a trademark of Q, LLC. Faxon Firearms is not affiliated with, endorsed by, or sponsored by Q, LLC. All other trademarks are the property of their respective owners.
Warranty Faxon Lifetime Guarantee. Covers manufacturing and material defects to the original purchaser. Excludes damage from misuse, neglect, non-standard ammunition, or modifications. Register your product at faxonfirearms.com/product-registration to expedite service. For purchases through dealers or distributors, warranty repairs are handled directly by Faxon Firearms; refunds must be processed through the selling entity. Full policy: faxonfirearms.com/warranty-privacy-terms/