Replacement Economy Gun head for Blasting Cabinet Kit. Designed for use with compressors as small as 1.5 hp (5-7 cfm) and suitable for use with most abrasives this is an economical and inexpensive die-cast blast gun designed with the hobbyist and occasional user in mind. Fitted as standard with a 1.5mm airjet and 4.5mm hard steel abrasive nozzle (a tungsten carbide nozzle conversion is available) it is also available with a 2.5mm or 3mm airjet and 6mm abrasive nozzle giving a greater performance and requiring 10-12 cfm to operate.