Abstract: A brake caliper depressor device for pushing back disc brake caliper pistons when installing new brake pads. The brake caliper depressor device includes a gun assembly including a main portion and a barrel portion connected to the main portion and also including a trigger mechanism being attached to the main portion; and also includes a push rod member being movably disposed through the gun member and having a first end and a second end; and further includes a plurality of caliper piston engagement members being attached to the second end of the push rod member.