Aurora BBU for KWA MK23
For KWA MK23, it provides massive kick and lifetime durability.
Carbon steel CNC made breech with smooth inner polishing
7075 T6 aluminium CNC made loading nozzle
aluminium cylinder bulb
Steel loading nozzle guide (do not collide with nozzle)
GBB style cylinder bulb seat provides stable fps and high efficiency
Largest cylinder bore as GBB pistol – 15.5mm
Extremely long cylinder – 35mm
Also comes with rear sight screw for it.