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.