The Polarstar Kythera SA does not need a battery or an FCU. It is fully mechanical and you will never have to use battery or other electronics to use it. The system is completely waterproof and...
The UGS™ can be used with any of the PolarStar cylinder conversion kits such as the F2™, F1™ or JACK™ and is compact enough that it can also be used with other similar HPA...
The Echo1 Version 3 Gearbox is a 6mm Gearbox for AK series airsoft rifles. This gearbox will fit most major brands from Tokyo Marui, JG, Echo1, AGM, G&G and more. This gearbox may require...