Magazine material: steel, Bearings type: steel sliding, Gearbox version: v.2, Bearings diameter: 7 mm, Magazine model: hi-cap, Accumulator connector type: small Tamiya, Battery cells type: mini, Battery included in set: NO, Material: aluminum, nylon, Color: black, Fire type: auto, single, Ammo: .23g, .25g, Serial number: YES, Length mm: 720, Inner barrel length mm: 220, Magazine capacity BBs: 200, Inner barrel diameter mm: 6,03, Gun Model: MP5