Description

The SIG Sauer NG556-QD SLX is a 5.56 NATO rifle suppressor built around a monolithic Inconel core and a Clutch-Lok quick-detach mounting system. The SLX low-tox design channels gases through a multi-flow path to reduce backflow of particulate and minimize visible flash. It is optimized for use with supersonic 5.56 ammunition on semi-auto carbines.

Key Specifications

• The caliber is .223 REM/5.56 NATO.
• The build material is Inconel.
• The overall length is 7.4″.
• The weight is 19.4 oz.
• The outside diameter is 1.67 in.
• The attachment type is Clutch-Lok QD.
• The NFA thread pattern is 1/2×28.
• The finish is Cerakote.
• The ATF model designation is NG556-QD.
• The ATF manufacturer is SIG SAUER INC.

With a monolithic core and repeatable quick-detach mounting, the NG556-QD SLX delivers durable service life and consistent alignment for 5.56 platforms. Its low-tox internal flow path and flash-reducing end cap make it a practical choice for shooters seeking reduced signature and lower particulate exposure during routine rifle use.