The following taken from the USCG St. Pete Station Notices:
25MM Aerial Signal Launcher Converter Notice
Notice For Owners of 25MM Aerial Signal Launcher Converters (Pre-1997)
Certain customers of Orion Safety
Products (or Orion’s predecessor Olin) utilize a metal “converter” to launch 12-gauge aerial signals out of a 25MM launcher. In 1996 the converter was altered slightly to allow for a larger star to increase brightness and improve flight dynamics. In 2005 Orion introduced the 12-gauge HP which was a longer shell designed to improve altitude. While all converters sold since 1996 accept the 12-gauge HP shell, it has recently come to the attention of Orion that converters manufactured before 1996 (whether by Orion or Olin) will not accept the 12 gauge HP shell.
If you possess a 25MM converter for firing 12-gauge shells and such converter was or may have been manufactured before 1997, Orion wants to send you a new converter at no charge to assure you have all the equipment
you need to fire your aerial signals. Please send a letter requesting your new converter with your address to Orion Safety
Products, Attn: Converter Request, 3157 North 500 West, Peru
Indiana 46070. Alternatively, email
us at firstname.lastname@example.org
with your request and mailing address.