COWCOW High Flow Aluminum Loading Nozzle for TM Hi Capa eye trace the N7 Milsim Gen 2 is the N7 Milsim Gen 2 is much more consistent in seating the BB in the bucking from shot to shot when compared to a typical open bolt HPA engine Polymer receiver and M LOK compatible handguard Highlighted features7075 Aluminum material with CNC machinedUltra lightweight designDurable construction prevents flexing and warping under heavy usageEnlarged gas inlet to smooth the gas flowSmooth and stable cyclingServes with an O Ring**Important Notice**Each product is inspected and tested before packaging so there may have some tiny scratches and gun oil inside the nozzle