The SIG SAUER SLXC (NG556C-QD) is a compact rifle suppressor built around an Inconel monolithic core and a quick-detach clutch mounting system. Developed as part of the SLX/SLH family, it incorporates a multi-flow path internal design to reduce backflow and flash for use with supersonic ammunition. The unit is intended for users seeking a compact, durable suppressor solution with quick-detach capability.

Key Specifications

• The caliber/capacity is .223 Rem / 5.56 NATO.
• The construction material is Inconel.
• The overall length is 5.2 inches.
• The outside diameter is 1.67 inches.
• The attachment system is the Clutch-Lok QD quick-detach mount.
• The NFA/thread pattern is 1/2×28.
• The finish is High Temp Cerakote.
• The ATF model designation is NG556C-QD.
• The design is optimized for supersonic ammunition and includes features for reduced blowback and flash.

The SLXC balances a compact footprint with robust materials and a user-friendly quick-detach interface, making it suitable for applications where weight and length are limited but durability and reduced backblast are required. Its multi-flow internal geometry and Inconel core provide a durable option for repeated service life while minimizing flash and toxic gas flow back toward the shooter.