Metal HopUp chamber for M4/M16
High precision replacement hop-up unit. Made of metal alloy for better durability. Suitable for M4, M16. Include all small parts, including bucking.
is among the oldest, most experienced and the largest Airsoft manufacturing facility in the world. Known for their unmatched quality control and professionalism, CYMA is selected to be the OEM of a vast amount of Airsoft products. Durability and performance meets affordability!