Thank You that helps alot. And they don't ask you whats in the box do they?
USPS can ask. And they can also require you to open the package and prove the rifles/shotguns are unloaded:
http://pe.usps.com/text/dmm300/601.htm
12.2 Rifles and Shotguns
Except under 12.1.1d and 12.1.2, unloaded rifles and shotguns are mailable. Mailers must comply with the rules and regulations under 27 CFR, Part 478, as well as state and local laws. The mailer may be required by the USPS to establish, by opening the parcel or by written certification, that the rifle or shotgun is unloaded and not ineligible for mailing under 12.1.1d. The following conditions also apply:
a. Subject to state, territory, or district regulations, rifles and shotguns may be mailed without restriction when sent within the same state of mailing. These items must bear a “Return Service Requested” endorsement, and must be sent by Express Mail (“signature required” must be used at delivery), Registered Mail, or must include either insured mail service (for more than $200) requiring a signature at delivery or Signature Confirmation service.
b. A shotgun or rifle owned by a non-FFL may be mailed outside the owner's state of residence by the owner to himself or herself, in care of another person in the state, where he or she intends to hunt or engage in any other lawful activity. These mailpieces must:
1. Be addressed to the owner.
2. Include the “in the care of” endorsement immediately preceding the name of the applicable temporary custodian.
3. Be opened by the rifle or shotgun owner only.
4. Be mailed using services described in 12.2a..
c. Rifles and shotguns may be mailed by a non-FFL owner domestically to a FFL dealer, manufacturer, or importer in any state. USPS recommends these items be mailed using those services described in 12.2a..
d. Except as described in 12.1.2a, licensed curio and relic collectors may mail firearms meeting the definition of curios or relics under 27 CFR 478.11 domestically to FFL licensed curio and relic collectors in any state. USPS recommends these items be mailed using those services described in 12.2a..
e. Firearms which are certified by the curator of a municipal, state, or federal museum which exhibits firearms to be curios or relics of museum interest may be accepted for mailing without restriction.
f. Air guns that do not fall within the definition of firearm under 12.1.1a are mailable. A shipment containing an air gun with a muzzle velocity of 400 or more feet per second (fps) must include an Adult Signature service under 503.9.0. Mailers must additionally comply with all applicable state and local regulations.
