i had this electric airsoft AR-15 from a local air guns store, $40. best gun i ever had. even though it only shot 250 FPS, it had a really high rate of fire, and batteries that lasted forever on one hours charge. you could hold that thing in one hand and hose people forever with its spin-up clips. with .12 g BBs, that thing was a monster. light enough to dual wield it, which would have been so fun.
too bad i never really got to use it. i regret selling it.