Once its in the Bound Book, it can be
1. returned after repair to the original owner , if it was logged in as a repair or;
2. be sent back to another FFL or done up on a 4473.
If the dealer keeps his repairs and sales in the same book (he is nuts if he does) he could theoretically "return" it to you after it was "repaired", definitely not to the spirit of the law. I wouldnt do it and dont know any dealer who would.

Brian
LTC, USA Ret.
NRA Patron Member
AHFGCA Life Member
USPSA Life Member