Fix Gun Checks Act of 2013 - Amends the NICS Improvement Amendments Act of 2007 (NICS Act) to modify the periods during which penalties are applicable to states that do not make certain records pertaining to firearms eligibility electronically available to the National Instant Criminal Background Check System (NICBCS). Repeals provisions authorizing the Attorney General to waive certain penalties if a state provides substantial evidence that it is making a reasonable effort to provide such records. Directs the Attorney General to publish, and make available on a publicly accessible website, an annual report that ranks states by the ratio of number of records submitted by each state to the estimated total number of available records of the state. Amends the Brady Handgun Violence Prevention Act to:
Amends the federal criminal code to define the terms "adjudicated as a mental defective" and "committed to a mental institution" for purposes of federal firearms provisions. Prohibits an individual so adjudicated before the effective date of this Act from applying for relief from disability under the NICS Act on the basis that the individual does not meet the requirements under such definition. Prohibits a person who is not a licensed firearms importer, manufacturer, or dealer from transferring a firearm to, or receiving a firearm from, another unlicensed person, except:
Specifies exceptions, including for:
Prohibits an unlicensed transferee from receiving a firearm from an unlicensed transferor if the licensed dealer through which the transfer is made receives a notification from the NICBCS that the transfer is prohibited. Sets forth requirements for a licensed dealer that assists in such transfer, including requirements to:
Permits such dealer to assess a processing fee.