Inner diameter is designed with φ6.03mm with Precision ±0.01mm Tolerance! (TM Original is Φ6.08mm)
Designed with length to improve airtightness
Solid BB stability and accuracy, made with enhanced stainless steel material!
COMPATIBLE MODEL
- GBB M4A1 MWS (TOKYO MARUI)
- GBB TYPE89 (TOKYO MARUI)