CowCow B01 Hi-Capa Dynamic BlowBack Unit - Black Slide Features:Durable constructionSteel hop up armFits

Features:Durable constructionSteel hop up armFits most aftermarket barrels and buckings

Anti-scratch and Anti-freeze

Excellent Cold-Resistance

any damage caused by improper fitting will not be returnable

Hammer set including hammer

CowCow B01 Hi-Capa Dynamic BlowBack Unit - Black Slide Features:Durable constructionSteel hop up armFitsB01 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.