Sparky,
This is all I could find on private transfer in the NRS. It doesn't state anything about checking the background of the firearm to be transferred, only the background of the person who is receiving the firearm.
Perhaps Jim knows another way to get the serial number checked.
Hope this Helps.
Be Safe.
Joe
NRS 202.254NRS 202.254 Private person authorized to obtain background check on person who wishes to obtain firearm from him; fee.
1. A private person who wishes to transfer a firearm to another person may, before he transfers the firearm, request that the Central Repository for Nevada Records of Criminal History perform a background check on the person who wishes to acquire the firearm.
2. The person who requests the information pursuant to subsection 1 shall provide the Central Repository with identifying information about the person who wishes to acquire the firearm.
3. Upon receiving a request from a private person pursuant to subsection 1 and the identifying information required pursuant to subsection 2, the Central Repository shall within 5 business days after receiving the request:
(a) Perform a background check on the person who wishes to acquire the firearm; and
(b) Notify the person who requests the information whether the information available to the Central Repository indicates that the receipt of a firearm by the person who wishes to acquire the firearm would violate a state or federal law.
4. If the person who requests the information does not receive notification from the Central Repository regarding his request within 5 business days after making the request, he may presume that the receipt of a firearm by the person who wishes to acquire the firearm would not violate a state or federal law.
5. The Central Repository may charge a reasonable fee for performing a background check and notifying a person of the results of the background check pursuant to this section.
6. The failure of a person to request the Central Repository to perform a background check pursuant to this section before transferring a firearm to another person does not give rise to any civil cause of action.
(Added to NRS by 1997, 825)