The Taigen T34/85 comes with an airsoft firing unit and is RTR out of the box. Just add your AA’s and you are set! This tank comes with a metal chassis, metal turret, metal hatches, metal gun barrel, metal suspension arms, metal idler wheel adjusters, LED headlight, metal road wheels with bearings and rubber tires, metal idler wheels with bearings, metal drive wheels, metal caterpillar tracks, steel 4:1 gearboxes, and metal tow ropes. This tank also comes with a 2000mAh battery and charger, LED machine gun, an accessory box, smoke unit, speaker and has track recoil when firing. This tank also includes the 360 turret rotation kit which allows unlimited turret rotations in any direction. This tank also has an easy open top hull allowing the whole top hull to be released with one lever.