Applications Pneumatic gun for two-component cartridges 400ml ratio 4:1 Characteristics 400ml cartridge 4:1 ratio Properties B938 M is an MK electric gun from the manufacturer SULZER. B938 M is a battery-powered applicator for a 400ml 4:1 ratio two-component cartridge. B938 M is ergonomic, very robust and easy to use.  This B938 M electrical dispensing system from the manufacturer SULZER enables the use of products from the ACROBOND A and ACROBOND PU and ACROBOND EP series. Other SULZER COX or MK hand guns are available for products requiring different mixing ratios.