The Hesychia SIXK-H is the HUB variant of the original Hesychia SIXK. We approved the following mounting systems:
- Rearden Atlas Plan B
- HUXWRX Hub QD Adapter 2.0
IDG will be releasing a HUB adaptor with the Hesion Bow integration in the future, which will also have full warranty coverage. WE DO NOT WARRANTY ANY OTHER HUB adaptors for issues due to walk-off, misalignment, and/or improper muzzle device and adapter installation. Warranty does NOT cover any other manufacturer mounting solutions. If you have any questions, please reach out to us directly at info@irregulardesigngroup.com
We fully warranty the listed mounting systems and are testing others. We'll add more in the future if they meet our quality and consistency standards.
*HUB ADAPTER AND MUZZLE DEVICE NOT INCLUDED
CALIBER RATING | 6MM ARC, 5.56MM NATO |
OVERALL LENGTH | 4.825" |
DIAMETER | 1.65" |
WEIGHT | 11.6 oz. |
MATERIAL | INCONEL 718 |
CONSTRUCTION | LPBF |
FINISH | HIGH TEMP CERAKOTE®, RAW |
MOUNT | HUB ADAPTER |
BARREL RESTRICTIONS | 10.3" MINIMUM |
FULL AUTO RATED | YES |
INTERNAL THREAD | 1.375x24 |

OVERVIEW
HESYCHIA SIXK HUB: Multi-Stage Hybrid Suppressor
HUB Adapter
The Hesychia SIXK-H suppressor is designed to work with Hub adaptors. We recommend the Reardon Plan-B system (link) and offer FULL WARRANTY for the Reardon system. WE DO NOT WARRANTY ANY OTHER Hub adaptors for issues due to walkoff or misalignment from MD/adaptor. The first blast baffle has a standoff of 1.64". Warranty does NOT cover Keymo.
Multi-Stage Hybrid Core
Engineered for control, this core reduces backpressure, noise, and flash while venting gas forward to protect shooter and firearm. Asymmetric baffles maximize harmonic disruption and gas diversion, paired with internal helical annular pathways that extend off-gassing duration from the blast chamber and main stack. Recessed flash-hiding geometry eliminates snag hazards, with special tines filtering unburnt powder to cut external flash. Disruptive micro-texturing on internal gas paths boosts turbulence without fouling.
CLEANING SCHEDULE
1 | HESYCHIA SIXK HUB SUPPRESSOR | $850 |
1 | PRODUCT INFO CARD | |
2 | IRREGULAR DESIGN GROUP STICKERS | |
1 | SUPPRESSOR DISPLAY STAND |


