I just re-read Section 131M and pursuant to the second paragraph (the "exemptions") it would seem - just by reading it and interpreting it in "plain English" - that large capacity mags are ok for cops and retired cops. (It would also seem to allow them to possess assault weapons.) Anyone have experience how/if these exemptions might legally apply to an out of state active (not on duty) cop, or an out of state retired cop visiting MA with a more than 10 round mag in his LEOSA-carried gun? The language in the second paragraph certainly seems broad enough to cover any cop or retired cop from MA or any other state, but.......... ??????? Thoughts? Section 131M. No person shall sell, offer for sale, transfer or possess an assault weapon or a large capacity feeding device that was not otherwise lawfully possessed on September 13, 1994. Whoever not being licensed under the provisions of section 122 violates the provisions of this section shall be punished................... The provisions of this section shall not apply to: (i) the possession by a law enforcement officer; or (ii) the possession by an individual who is retired from service with a law enforcement agency and is not otherwise prohibited from receiving such a weapon or feeding device from such agency upon retirement.