CowCow B01 Hi-Capa Dynamic BlowBack Unit - Silver Tokyo Marui VSR It minimises the air leakage

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

Ultra Lightweight Blowback Unit

The vale pin lock is more durable and stable than the traditional design

The enhanced trigger ring rail helps to give the trigger a more direct and sensitive trigger pull

Alternative adapters are available separately

CowCow B01 Hi-Capa Dynamic BlowBack Unit - Silver Tokyo Marui VSR It minimises the air leakageB01 Blowback Housing is precision CNC machined from aluminium 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.