Keep in mind, electric recoil rifles are getting better each day. Although they still have a long way to go, they are certainly catching up. Take a fully upgraded Tokyo Marui So com/Sopmod/Scar for example. The few things they don't have over the gbbrs includes the fact that 2 bb's still drop free after each mag change, and the recoil still isn't quite there yet. Real Sword toyed with the idea of a magnetic blow back, but put he project on hold. Anyways, just something to think about.