Lots of misleading info in the last few posts. You can not ship ammo, powder or primers through the USPS, even if you're a FFL. No HAZMAT using USPS. You can not ship a handgun USPS if you are NOT a FFL, but you can ship a rifle or shotgun (a long gun). You CAN ship bullets (not loaded ammo, just the bullet) and brass by USPS. A FFL CAN ship rifles, shotguns and handguns by USPS. USPS is the lowest cost way to ship a handgun today. Declared as a firearm and with the proper form submitted with the package, it gets secured handling. I've had a FFL for almost 24yrs., and had ZERO problems shipping any firearm, brass or bullets,,,,, or the occasional gun part, by the USPS. I have had both UPS and FedEx loose packages (barrels mostly) and have broken open packages with rough handling, and I pack EVERYTHING like it was going to be handled repeatedly by a half grown Orangutang who is intent on playing with everything he lays hands on.