HUB-format suppressors, Hesion Bow interface. First ever fully integral, 3D printed HUB adaptor with a redundant locking system
The Hesion Bow HUB Adapter is the part that lets HUB-format suppressors run on the same taper and locking system as the native Hesychia family. It handles the HUB side at the back of the can while the rifle still sees a controlled 15-degree taper and 1.125-8 American buttress thread instead of a loose thread converter.
All of the locking work lives in one monolithic Inconel 718 body with integral flexure pawls, not in a stack of threaded parts and lock rings. The adapter is meant to clamp hard, repeat, and tolerate real heat without turning the rear of the suppressor into its own mechanism.
| Overall Length | 1.2" |
| HUB Thread Length | 0.400" |
| Caliber Specific | No |
| Wrench Flats | 1.5" |
| Manufacturing | Laser Powder Bed Fusion (LPBF) |
| Taper Angle | 15 degrees included |
| Mount Interface | 1.125-8 American Buttress Thread |
| Mounting Face Diameter | 1.5" |
| Projected Outer Diameter | 1.61" |
| Shoulder Distance from Barrel | 0.125" |
| Mount | Hesion Bow (U.S. No. 12460889) |
| Compatible Suppressors | Hesychia SIXK-H, Hesychia 556UK-H |
| MSRP | 275 |
Most HUB adapters are just a thread and a shoulder. The Hesion Bow HUB Adapter offers the steepest and longest taper interface on the market while still providing a redundant retention system that has never been applied before on suppressors. There is no assembly, no small parts, no dissimilar materials, just Inconel 718 throughout the entire system.
The HUB Adapter is a single-piece LPBF Inconel 718 part with flexure pawls built into the body. Those pawls act as springs for active retention, giving clamp force and zero-backlash engagement without external levers or collars to loosen under heat and fouling.
In testing, the adapter has been cycled on and off more than 3000 times without loss of retention. You would have to take your suppressor on and off every day for over 8 years straight.
The HUB Adapter uses 1.5" wrench flats across the protective hoods and is meant to be torqued into the suppressor and left alone. Day to day, you mount and remove the can at the Hesion Bow interface on the rifle side, not by spinning the HUB every time.
Inconel 718 and the same LPBF process as the rest of the Hesion Bow hardware mean the adapter shares the same wear and heat margins as the mount stack. It is built to live the suppressor’s schedule of fire instead of being the weak threaded link.
The Hesion Bow HUB Adapter uses Inconel 718 so the adapter, muzzle device, and suppressor body share the same thermal behavior. When dissimilar alloys are mixed, such as a 17-4 component driving into an Inconel 718 taper, each material grows at a different rate as the system heats. The faster-growing component can wedge itself into the mating taper, gall the surface, and make the suppressor feel thermally locked once everything cools. Over time, those cyclic forces fatigue the taper interface instead of letting it stay clean and repeatable.
The HUB Adapter uses the same 1.125-8 American buttress thread as the rest of the Hesion Bow family because that profile was developed for hostile, dirty applications. The intentionally blunted crest of the thread increases impact and galling resistance and leaves a relief path for gas to move if the taper seal is disturbed, so carbon has somewhere to go instead of packing the threads solid the way it does on fine-pitch, sharp-crested systems.
The Hesion Bow HUB Adapter is compatible with Hesychia SIXK-H and Hesychia 556UK-H suppressors and plugs them into the same Hesion Bow muzzle devices as the native SIXK and 556UK cans. Once it is installed, the rifle sees one mount standard, and the adapter’s job is to keep it that way for thousands of cycles.
