academy #17223 desert eagle 50 gold special academy models high power air 6mm bb series(failure to use “6mm” will lead to product damage and malfunction.) impact resistant reinforced plastic(abs) parts air soft series is well-received among fans for its reliable structure and remarkable reality and it will lead you to the winner in the field. size(length, barrel, diameter): 10.7", 6", 0.35" (273, 152, 9 mm), 4 lb(1.9 kg) / 10 shots / the package size is 11.8 x 7 x 2.36". specification complete product. material: plastic(abs) parts from 12 years old manual: english, korean made in korea(republic). it is an air compressor system. it has no spring. the slide is saw-toothed.