[Source] The R-20 scatterblaster was a blaster model created by the arms manufacturer BlasTech Industries. The blaster could be wielded with one hand and could also fire a large volley of tiny bolts all at once. That function made it particularly useful against Jedi, who were unable to deflect so many little bolts simultaneously with a lightsaber. The R-20 scatterblaster was used by Mandalorian Supercommandos around 43 ABY.