Modern and popular honeycomb mock suppressor from knights armament, has a durable yet easy QD ball bearing system mounts to 14mm CCW threads, full metal, and has plenty of internal space to accept tracer units &/or baffles. Specifications: Aluminum Alloy Construction 14mm CCW Tracer & Baffle Compatible:✅ Weight: 218g Length: 5 inch Internal diameter: 30mm Internal length: 4.8cm~