Hesychia 556uk Blk

5.56 Dedicated · Hesion Bow Mount · Micro Flow Enhancer Included · Monolithic Inconel 718 · Extreme Low Backpressure · Full-Auto Rated · Armor Black · NFA The Irregular Design Group (IDG) Hesychia 556UK is a dedicated 5.56 ultra-compact monolithic Inconel 718 suppressor built around the Hesion Bow dual-locking mount system. This listing includes the Micro Flow Enhancer bundle. Armor Black High Temp Cerakote finish. Laser Powder Bed Fusion (LPBF) construction—asymmetric multi-stage gas management with early annular intake, controlled routing, staggered internal events, and shielded final exits in a sealed monolithic unit. No user-serviceable internal components. 13 oz. 4.75" OAL. Full-auto rated for 10.3" barrels and above. No host tuning required.

Primary lock is a 15-degree taper paired with a 1-1/8"-8 left-hand American Buttress Thread for fast engagement and strong load transfer. Six flexure pawls printed directly into the suppressor body engage 32 grooves on the muzzle device as a secondary redundant retention system. Integral to the suppressor—not an added sleeve or separate latch. Adds only 0.5 oz. to the overall system weight.

Micro Flow Enhancer is the intended pairing for the 556UK. It functions as part of the suppressor's first-stage gas control—handling the initial pressure event at the muzzle device before pressure stacks in the can. This is the primary reason the 556UK maintains compact length without the harsh tone and backpressure behavior typical of ultra-compact rifle suppressors.