As far as I know, there is no reservation for Internal PG seats in KGMC.
If you want to know about the colleges that have internal reserved seats for PG, the list is as-
*Vardhaman Mahavir Medical Colleges, Safdarjung Hospital, Delhi
*Institute of Medical Sciences, BHU, Banaras
*B.J Medical College Ahemdabad
*MGIMS, Wardha
*Aligarh Muslim University, Aligarh
*Armed Forces Medical College, Pune
*JIPMER, Pondicherry.