IRREGULAR DESIGN GROUP HESYCHIA SIXK HUB 5.56/6MM ARC

The Irregular Design Group HESYCHIA SIXK-HUB Suppressor is a compact, ultra low back pressure 6mm and 5.56 suppressor engineered for hard-use rifles and demanding shooting applications. Built entirely from monolithic Inconel 718 using advanced Laser Powder Bed Fusion manufacturing, the SIXK-H delivers exceptional durability, reduced gas blowback and optimized host reliability without requiring additional rifle tuning.

Designed around shootability and real-world rifle performance, the SIXK-H utilizes advanced annular gas pathways, radial diamond structures and early-stage flow control geometry to rapidly redirect and distribute pressure throughout the suppressor. This design minimizes back pressure while improving consistency, flash reduction and overall shooting comfort.

The HUB-compatible 1.375-24 TPI mounting system provides flexibility across multiple mounting solutions while remaining compatible with IDG HFH, Micro FE and Macro FE muzzle devices. Full auto rated for barrels 10.3 inches and longer, the SIXK-H is purpose-built for SBRs, duty rifles and high-performance rifle setups including demanding cartridges such as 6 ARC.

Key Features:

• Ultra low back pressure suppressor design
• Compatible with 5.56mm and 6mm rifle platforms
• Monolithic Inconel 718 construction
• Advanced LPBF additive manufacturing process
• HUB 1.375-24 TPI mounting interface
• Compact 4.825-inch overall length
• Full auto rated for 10.3-inch barrels and above
• Optimized gas flow management system
• Reduced gas blowback and improved shootability
• Compatible with HFH, Micro FE and Macro FE muzzle devices
• No tuning required for most host rifles
• Engineered for SBR and hard-use rifle applications

Specifications:

• Product Name: HESYCHIA SIXK-HUB Suppressor
• Manufacturer: Irregular Design Group
• Caliber Compatibility: 5.56mm, 6mm
• Weight: 11.6 oz
• Overall Length: 4.825"
• Diameter: 1.65"
• Mount Interface: HUB 1.375-24 TPI
• Material: Inconel 718
• Manufacturing Method: Laser Powder Bed Fusion (LPBF)
• Gas Profile: Extreme Low Backpressure
• Full Auto Rated: Yes
• Minimum Barrel Length: 10.3"
• Compatible Muzzle Devices: HFH, Micro FE, Macro FE
• Test Platform: DD MK18 10.3
• dB at Ear: 140 dB (mount dependent)
• dB at Muzzle: 144 dB (mount dependent)
• Finish Options: Coating Dependent