first, welcome to the forum. second, the bullpup design is popular amongst many fighting forces, Britain, France, Portugal, and now Israel. The US won't adapt for a while however, if you look at the history of changing armanents, especially the M16's story, it will be quite a while before we embrace a foregin weapon. they are currently working on concept weapons, but they already turned down the XM-8 project. it may hit the civilian market first as a class 3.
"I only regret I have but one life to lose for my country" Nathan Hale
Amendment 2 - Right to Bear Arms. Ratified 12/15/1791. Note
A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.