The LWRC S-556 is a compact, quick‑detach suppressor designed for use with carbine‑class rifles chambered for cartridges up to 6mm diameter (for example, 5.56 NATO and 6mm ARC). Constructed from Inconel and stainless steel with a C‑Series Cerakote finish and gas‑nitrided components, the S‑556 features a Wire EDM‑machined bore, multi‑chamber baffle geometry, and a vented endcap to manage gas flow and reduce perceived backpressure. The unit is full‑auto rated, ships with a 1/2×28 QD flash hider mount, and is supplied as a fully welded, non‑user‑serviceable assembly.
Key features
- Compatible with cartridges up to 6mm diameter (e.g., 5.56 NATO, 6mm ARC)
- Wire EDM bore for precise, uniform internal dimensions
- Gas‑nitrided components for increased surface durability
- Multi‑chamber, vented baffle design to direct gas flow and reduce backpressure
- Vented endcap and internal flow design that mitigates flash on short barrels
- Full‑auto rated for sustained fire applications (manufacturer rating)
- C‑Series Cerakote coating — high temperature rated finish
- Fully welded construction for structural integrity
- Quick‑detach (QD) attachment; ships with 1/2×28 QD flash hider mount
Technical specifications
- Caliber: 5.56 NATO & 6 ARC
- Length: 5.125 in
- Diameter: 1.75 in
- Weight: 17.5 oz
- Materials: Inconel and stainless steel
- Attachment: Quick Detach (ships with 1/2×28 QD flash hider)
- Coating: C‑Series Cerakote
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