It produces by CNC with Stainless Steel construction which give a super durability. From 11MM clockwise thread to 14MM counter-clockwise thread which is commonly used on silencer or tracer on the market. Perfect fit for out OB1 Threaded Outer Barrel. 3 colours are available: Polished Silver, Titanium Black and Titanium Gold.
*PS: Please note: installing parts / assemble /fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation / fitting. Fitting may be needed as the condition of each airsoft gun might be different. Regular maintenance is needed for all airsoft guns in order to keep it in good working condition and reduce wear out issue on parts.