You are considering a Tokyo Marui airsoft AEG. 1:1 scale. Shoots semi or full auto at about 280-300 fps with .20 gr BBs. Collapsible stock. 20 rd magazine. Uses 8.4 volt battery (not included) inside handguard. Nice platform to build a custom upgraded airsoft gun with as so many upgrade parts are available for these. Or just fun to plink with in the backyard. VG condition as I never skirmished with after buying it on Ebay some years ago