CowCow B01 Dynamic Blowback Housing (Black) For Hi-Capa

Fits For Tokyo Marui Hi-Capa and other similar GBB 
Its CNC machined with 7075 aluminum drives a lightweight and durable blowback housing. Its 18g weight will smooth the cycling and faster blowback.

Also, the special design on piston head can let the O-ring always in prefect condition. It minimises the air leakage during the blowback action and the different sizes of anti-oil O-Ring provided can fit common used nozzles in the market. It can effectively cease that slight wobbling during the nozzle movement.