Discontinuance of Accessory Classifications

Not exactly sure of the implications here… anyone feel free to enlighten me in the comments.

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.

Source: https://content.govdelivery.com/accounts/USATF/bulletins/2218940