Abstract: A plurality of flash lamps have percussive ignition tubes mounted in a base member. Striker springs for the lamps are cocked behind posts extending from the base member, and an opening through the base member beneath each striker spring permits a trigger finger to rise from a camera through an appropriate opening and release a striker spring which then impacts against the ignition tube of a lamp and causes the lamp to flash. The base member is provided with flat-top raised ribs extending partly along the sides of the openings and between the cocked positions of the striker springs and the associated lamp ignition tubes, for guiding the travel of the striker springs.