individually approves, firearms automatically achieve C&R status upon turning 50, provided they are in the original configuration. If modified significantly, the 50-year clock resets to the date of modification. (Specific examples are available in the ATF FAQs.) Certain automatic firearms have been designated as C&R firearms, and a C&R may be used to acquire these as well. Collectors may acquire C&R firearms in interstate commerce, e.g., via mail or phone order or the Internet, or in person. (This is especially important for collectors of pistols and revolvers since they may not otherwise be acquired outside a collector's state of residence.) Collectors are not considered to be FFL dealers and have no special privileges concerning non-C&R firearms, nor may they "engage in the business" of regularly selling C&R firearms to persons who do not have an FFL. Selling of C&R firearms does not require an FFL transfer across state lines, only if the firearm has a collectible status. The purpose of the C&R license is to enable a collector to acquire C&R firearms for their personal collection and not to become a firearms dealer. Curio & Relic Compliance Inspections (D) At the election of a licensed collector, the annual inspection of records and inventory permitted under this paragraph shall be performed at the office of the Attorney General designed for such inspections which is located in closest proximity to the premises where the inventory and records of such licensed collector are maintained. —ATF 2005 Regulations page 18. (ATF Publication 5300.4) Conversion of C&R firearms Any firearm sold as a C&R firearm once changed out of its original configuration cannot be resold as a C&R firearm. In regard to conversions; certain pistols have been approved for sale with added safety conversions (i.e. Polish and Romanian Tokarev pistols, to which a manual safety was added to meet import requirements). Certain other modifications, such as period sporterisations, are arguably C&R qualified as they represent the gun culture of the period. An example would be a Lee–Enfield or 98K Mauser military rifle that had been converted into a continental style sporter before World War II. These common conversions occurred more than 50 years ago, and represent a sub-type of special interest to collectors. Antiques Federal law defines guns manufactured in or before 1898 with unconventional firing mechanisms (such as percussion, flintlock and other combustion methods typically considered "black powder"), or cartridge firearms that have uncommon