The Systema Energy line of internal AEG upgrade parts are the first ever complete line of lightweight, energy efficient, airsoft gun enhancements. The Energy line from Systema was designed to do two things, reduce player fatigue and reduce parasitic drag from the gearbox's moving components. According to Systema, "a quantifiable weight reduction in the weapon platform can be achieved," by completely changing all of your internal gearbox parts to Systema's Energy line. That is where this Energy Piston Head fits into their design; the piston head is lightened to reduce player fatigue and parasitic drag from the drive train. Included with this piston head are two o-rings, 1 rubber and 1 silicone. The rubber o-ring is designed for use with the temperatures 5°C-40°C(41°F-104°F), and the silicone o-ring is designed for use blow 5°C(41°F). Not only is this head set energy efficient it's cold weather friendly as well.
Package Includes: piston head, rubber o-ring, silicone o-ring