- Aluminum - Ideal for Airsoft Guns with 14mm Negative Internal Threads - Allows for mock suppressors, compensators, tracer units, and other accessories to be attached - Includes a port for a set screw for added stability (Set screw is not included) (Type): 14mm- (12 screw teeth) to 14mm+ (10 screw teeth) Compatibility: For Tokyo Marui, Cyma, and other compatible airsoft guns with 14mm negative internal barrel threading
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