High Quality Full Metal structure - Semi /Fully automatic Firing models. - Adjustable Hop Up. - One-piece metal Hop Up - High RPM Motor - Two piece metal outyer barrel - Six Position LE type retractable stock - Dimension 770mm/850mm - Weight 3050g - Inner Barrel 363mm - Muzzle Velocity ~300FPS with 0.2g BB - Magazine Capacity 300 round - Patented "Spilt Gearbox" Design