PRODUCT DESCRIPTION: The Worker Esper Pump Conversion Kit allows you to transform your Model A Esper to a Model B. The Esper Model A comes stock with a rear prime and the Pump Conversion Kit allows you to have a pump grip. Esper Blaster Model A required. The Esper Model A to Model B kit includes 10 pieces to transform your Esper Blaster.
FEATURES: -Compatible with Worker Esper Model A Blaster -Blaster not included