The Sig Sauer SLX556-QD is a performance-oriented rifle suppressor engineered for .223 Rem/5.56 NATO cartridges. It uses a monolithic Inconel core and a Clutch-Lok quick-detach mounting system with an intuitive tactile locking ring and infinite radial locking positions. The SLX design employs a multi-flow internal path to reduce muzzle flash and lower the amount of toxic fumes vented back through the ejection port; it is designed for use with supersonic ammunition.

Key Specifications

• The suppressor is compatible with .223 Rem / 5.56 NATO cartridges.
• Constructed with a monolithic core of Inconel for strength and durability.
• The external finish is Cerakote black for corrosion resistance and low-reflectivity.
• The body diameter measures 1.67 in (42 mm).
• The overall length is 7.4 in (188 mm).
• The unit weight is 19.4 oz (550 g).
• Attachment uses the Clutch-Lok QD system with a tactile locking ring and infinite radial locking positions.
• Includes Quick Detach mount / Muzzle Brake for rapid attachment and removal.
• The product type is a rifle suppressor designed for supersonic ammunition.
• The internal multi-flow path is optimized for flash reduction and lower toxic fumes.

Durable and engineered for real-world performance, the SLX556-QD pairs robust Inconel construction with a fast, repeatable Clutch-Lok QD interface to support demanding range, duty, and hunting applications. Its low-profile external finish and flash-reduction geometry make it well suited to shooters who prioritize durability, reduced muzzle signature, and manageable backflow of gases during extended use.