Selling another of my ERG's, incase you don't know what they are there PTS/KWA/KSC's answer to the TM NGRS. As such they feature recoil ( stronger than TM ), stop on empty / working bolt catch, last round bb feed. Unlike the TM though these use standard batteries, this one front wired to a deans. They also can use standard M4 mags, though to maintain the above features you need the correct mags, but there quite cheap anyway.
Anyway as said this gun his the PTS version so has a Magpul Body, MOE Pistol Grip . The MOE Stock has been replaced with the superior and far more expensiv