From NRA-ILA:

Authored in the House by state Representative Mike Turner (R-82) and in the Senate by state Senator Nathan Dahm (R-33), HB 2461 would require that a chief law enforcement officer (CLEO) sign an application for the transfer of any item regulated under the National Firearms Act (NFA) within fifteen days if the applicant is not prohibited by law from receiving it.

UPDATE:

OK House overrides veto:

House Bill 2461 will go to the state Senate where a two-thirds vote would be required to complete the veto override. The bill initially passed the Senate by a vote of 46-0 on April 22.

Wednesday’s House vote came one day after Fallin vetoed 15 House bills, including this one, while criticizing the House for failing to act on important issues, such as Capitol repairs, while passing flawed bills and bills that are irrelevant to most Oklahomans.