SureFire's Suppressor Trainers are intended for use with marking cartridges (e. g. Simunition FX, and UTM), training ammunition (e. g. SRTA), frangible and live ammunition in a training environment. The SureFire Trainers mimic the length, weight and attachment of SureFire SOCOM Fast-Attach suppressors, allowing warfighters to train as they would fight when participating in force on force training scenarios. Every SureFire Suppressor Trainer is made in the U. S.A. Features: Patented Fast-Attach design attaches and removes in secondsProvides multiple live and simulated round training optionsDurable construction for long service life Surefire SOCOM 5.56 Black Training Suppressor (NON-NFA) SF-TRAINER-556-1-BK