501 C.M.R. 19.06
Any loss or theft of a firearm shall be reported by the owner thereof via the MIRCS portal within seven days of learning of the loss or theft. The loss or theft report shall include the following information:
DCJIS shall notify the licensing authority in the town or city where the owner resides and where the license, card or permit was issued via the MIRCS portal of the loss or theft report.