The PTS E9 18 to 14mm CCW 2inch Barrel Extension w/Thread Protector Black features an all-in-one design specifically for the E9 Scorpion. It is an 18mm to 14mm CCW adaptor provides users with the option to attach any 14mm CCW-compatible muzzle device such as a flash hider or a mock suppressor or tracer unit in front of a standard ASG CZ Scorpion EVO AEG handguard. It is made from steel with QPQ finish to ensure an extremely durable high quality finish and excellent corrosion resistance.