

My favorite example is the Magnuson–Moss Warranty Act, which requires manufacturers to honor warranty on products that you or a third party have worked on in the past unless the manufacturer can prove that the specific malfunction for which you’re seeking warranty service was caused by the previous repair or modification.
Those “warranty void if removed” stickers are illegal.
It also prohibits manufacturers refusing to repair a product due to unrelated damage.



Nobody is a good enough shooter with a cheapo AR to reliably hit an ear at that range. It’s probably a 2-3MOA barrel at 100 meters, so you’re looking at like a 2.5-4" spread with the world’s best marksman and match-grade ammo.