Another look at the Specna Arms SA-H21 Edge 2.0 with the GATE Aster MOSFET by Softair Zone... "Here we show one of the newer models from Specna Arms from the 416 series. The SA-H21 Edge 2.0 is now equipped with higher quality internals such as Reinforced V2 Gearbox with 8mm ball-bearing bushings, polymer piston with aluminum piston head, metal cylinder + metal cylinder head. In addition to the solar trigger, the helium flat hop-up, the SA-H21 has a gate aster and is therefore fully programmable. This can be done using the trigger without a PC or mobile phone. However, it is more convenient with the Gate app, which we also present in the video."