This adjustable hopup from DK is styled after an AK74 flash hider and is compatible with 14mm ccw outer barrels such as those found on Jinming J11 AK and RX AKM v3 with metal outer barrel.
This adjustable hopup from DK is designed to fit directly onto Jinming Gen9/J9 blasters via the 14mm CCW threaded outer barrel. However we have had good results using this hopup on any blaster with a 14mm CCW outer barrel so...