Universal Primer Arm by RCBS RELOADING PRODUCTSDesigned for fast and accurate primer seating. Primer plugs and sleeves included for large and small rifle and pistol primers. Changing sizes is fast and easy—less than 60 seconds. Fits Rock Chucker ® II and JR and Reloader Special and most “C†Presses. Note: Not for use with RC Supreme
