Ammunition
- As with firearms, shipments of ammunition must be accompanied by a written notice of the shipment's contents. It is unlawful for any licensed importer, dealer, manufacturer, or collector to transfer shotgun or rifle ammunition to anyone under the age of 18, or to transfer handgun ammunition to anyone under the age of 21.
- It is illegal to commercially manufacture or commercially import armor-piercing handgun ammunition as described in 18 U.S.C. chapter 44 §921 definitions (part 21). It is also illegal for federally licensed dealers to sell armor piercing handgun ammunition to anyone other than the government or law enforcement without keeping detailed records, or unless that dealer has a class 10 or 11 FFL and sells to another class 10 or class 11 FFL license holder as described in 18 U.S.C. chapter 44 §922 (b). Civilians in most states can legally possess pistol-caliber armor piercing ammunition. Only CA, IL, TX, KY, NJ, RI, FL, and Washington D.C. have laws restricting the use of such ammunition.
Read more about this topic: Gun Law In The United States