Irregular Design Group HESYCHIA 556UK-H - 5.56mm Inconel Suppressor - HUB Compatible - Black

Irregular Design Group HESYCHIA 556UK-H - 5.56mm Inconel Suppressor - HUB Compatible
Black

Adapt dedicated 5.56 duty suppression to your preferred quick-detach system with the Hesychia 556UK-H HUB 5.56mm Sound Suppressor. Built as the 1.375"-24 TPI HUB-compatible variant of the ultra-compact Hesychia 556UK, the 556UK-H allows shooters to run industry-standard mounting interfaces without sacrificing the low backpressure and extreme durability required for hard-use 5.56 NATO carbines. 3D-printed from Inconel 718 superalloy using advanced Laser Powder Bed Fusion (LPBF), this full-auto rated silencer is built to withstand relentless firing schedules on barrels down to 10.3 inches.

Measuring an incredibly short 4.18 inches in overall length and weighing just 11.0 ounces, the 556UK-H utilizes a low backpressure gas architecture that controls pressure at the instant of uncorking. Featuring an initial radial diamond chamber that channels high-pressure gas into early annular pathways before it hits the blast baffle, it reduces gas-face and maintains normal host cycle rates without requiring system tuning. With a deep recessed exit aperture, six core-pulling exit ports, and isolated nose annular pockets, the 556UK-H suppresses 5.56 NATO down to 136 dB at the ear (tested on a 10.3" MK18) while providing exceptional flash control for a K-sized suppressor.

Features

3D-Printed LPBF Inconel 718 Superalloy Build:
Laser Powder Bed Fusion 3D-printing creates complex, seam-free internal gas pathways in Inconel 718 for unmatched erosion resistance and full-auto structural integrity under extreme heat.

Universal 1.375"-24 TPI HUB Compatibility:
Features industry-standard HUB rear threads, allowing seamless integration with a wide variety of aftermarket quick-detach or direct-thread mounting systems.

Low Backpressure Radial Diamond Architecture:
Early annular intakes and a radial diamond blast chamber distribute gas off the muzzle instantly, preventing pressure traffic jams at the blast baffle and eliminating the need for firearm tuning.

Ultra-Compact 4.18" Profile (< 140 dB at Muzzle):
Delivers hearing-safe 136 dB ear-level attenuation on 10.3" SBR platforms while adding minimal length and forward leverage to the host rifle.

Advanced Recessed Exit Aperture & Flash Control:
Features six specialized core-pulling exit ports and isolated nose annular pockets that pull gas at an angle away from the bore line to tame muzzle flash and harsh pressure cracks.

Specifications