A starter package with the Arcturus LWT M4 Sport 10" CQB AEG is presented here by Airsoft Master... "The Arcturus LWT starter package is such a game changer! You still have the micro-trigger switch and their durable polymer receiver; but what more can you ask? Well, how about the Arcturus LWT 10" aeg has a actual quick change spring system to access from removing the buffer tube? or how bout the LWT starter pacakge also comes with a 11.1 2000mah lion battery?!