have been used to identify and collect information useful for this commercial study of the Blow Guns market . Primary sources , such as Manufacturers , Distributor , Opinion Leaders , Industry Experts , Front-line Staff , Technology and Innovation Directors , Executives from Related Industries and Organizations , Purchasing / Product Managers , End Users / Buyers , Industry Experts , Opinion Leaders and Research Institutes , have been interviewed to obtain and verify critical information as well as to assess prospects of the Blow Guns market .