That won't fly. Guns are the "arms" referred to in 2A. The bullets are a component of the arms.
I'll tell you what "won't fly". It's the idea that our Founders were attempting enumerate our rights by insisting on a Bill of Rights. The Bill of Rights is simply a way of clarifying that no part of the Constitution permits the federal government to infringe the right to keep and bear arms.
Our Founders would be completely baffled by your "delivery system" nonsense, because the phrase "delivery system" appears nowhere in the document.
Only communist governments treat their citizens in this fashion; that everything permitted is required and that everything not permitted is prohibited.
If we amended the Constitution to permit "delivery systems" would we then need an additional amendment for "delivery system fuel"? How about hangars to protect "delivery systems" when they are not in use? Would that require an additional amendment?
Our Founders never envisioned the use of computers to design "delivery systems". I suppose we would need another amendment to protect militia use of computers?