Takes standard Tokyo Marui spec Airsoft AEG magazines including drum mags! Spring powered firing action; Does not need a battery or gas to operate! S-Sytem RIS handguard for attachments and add-ons Railed receiver frame for optics and attachments 1:1 full size replica Adjustable hopup with realistic fire mode selector Retractable stock Injection molded polymer construction This is a full size AR-15 / M4 rifle that powers without the need of a battery or gas. Rifle comes with S-System RIS handguard, detachable rear sight, and a drop-free 300 round Hi-Cap magazine. Perfect for recreational backyard skirmishes and spring rifle only casual gaming.