Just into the shop is the new civilian model of the Taser ECW, the Taser Pulse Plus.  If you feel that a firearm is too much, you now have the opportunity to own the less lethal option the police use.  A Massachusetts LTC is required to purchase.

https://taser.com/products/taser-pulse-plus 

Personal safety has never been more complete with the TASER Pulse+ device. Weighing in at just 8 ounces, this high-tech, intuitively-designed device is revolutionizing the self-defense market and helping people go wherever they want with more confidence. Your Pulse+ has an ideal 15’ shooting range and can provide a 30-second muscular override to would-be attackers.

It also integrates with Noonlight, a safety platform that wirelessly connects your Pulse+ device to your phone. Backed by live dispatchers, Noonlight will send emergency personnel to your location whenever your Pulse+ is fired. Every Pulse+ device comes with our Safe Escape device replacement when fired under duress. This is the sidekick you’ve always wanted.