There is a proposal in the legislature that would require owners of fireamrs to take out a $250,000 insurance policy for each seperate firearm owned If you don't you will be imprisoned. It also calls for the limitation on the number of firearms you can purchases per year. It would also require owners to show proof of insurance for each firearm at time of LTC renewal.
http://www.mass.gov/legis/bills/house/ht02/ht02125.htm
http://www.mass.gov/legis/bills/house/ht02/ht02125.htm