Manufacturer : SIIS Standart Weight : 0.30 gr Measured Weight : 0.298 gr (average)	Manufacturer : Madbull Standart Weight : 0.36 gr Measured Weight : 0.368 gr (average)	Manufacturer : Madbull Standart Weight : 0.40 gr Measured Weight : 0.418 gr (average)	Manufacturer : Madbull Standart Weight : 0.43 gr Measured Weight : 0.43 gr (average)

To prevent the BB differences even in same weight and to take into account sensibility of the scale 100 units BBs was measured.Photos includes weight of 100 units BBs.The information was based on this avarage.
(Scales has 0.1 gr measure sensibility)