Effective immediately, any requests for a determination on how an accessory affects the classification of a firearm under the GCA or NFA must include a firearm with the accessory already installed. Except in cases of conditional import determinations, FTISB will not issue a determination on an accessory unless it is attached to the submitted firearm.

If you have previously submitted a sample accessory for classification, FTISB will be returning your sample without classification. FTISB will contact you in the near future with further instructions to facilitate the return of your sample.