O.K. I have Spoken to a Captain at the Gun Licensing Dept,
All I Need is a copy of My Fire Arm license & I.D. plus that of the Client, and a letter to Keep the rifle in safe keeping, I must then just take it to the Captain and he will issue me a Permit to do the work.
As Said, it it Only "Cosmetic" Work, No Alteration of Names and numbers or Markings.

Seems Like it could Work. !!