CowCow B01 Hi-Capa Dynamic BlowBack Unit - Black CowCow It is also intended to

It is also intended to cushion the impact of the slide against the frame

Durable construction for IPSC shooter use

The durable material and enhanced design drive a consistent and rapid trigger reaction to players enjoy every single shot

valve spring

CowCow B01 Hi-Capa Dynamic BlowBack Unit - Black CowCow It is also intended toB01 Blowback Housing is precision CNC machined from aluminum 7075 for ultimate durability and quality. Weighing in at just 18 grams, this blowback housing will improve the cycling action as well as gas tranmission. 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.