If I understand the question correctly, you're asking if there is a mechanism...and I guess this would be outside of a design. A firearm is designed for four, but then later on a new cartridge is developed that fits 20 and also fits that firearm, and that could be used in the United States. Is there a mechanism for us to regulate that? I think that is what I am hearing.
On May 4th, 2023. See this statement in context.