Holy shit. This seems to outlaw semiauto pistols.
A weapon is a Copy or Duplicate and is therefore a prohibited Assault weapon if it meets one orboth of the following tests and is 1) a semiautomatic rifle or handgun that was manufactured orsubsequently configured with an ability to accept a detachable magazine, or 2) a semiautomaticshotgun.31. Similarity Test: A weapon is a Copy or Duplicate if its internal functional components aresubstantially similar in construction and configuration to those of an EnumeratedWeapon. Under this test, a weapon is a Copy or Duplicate, for example, if the operatingsystem and firing mechanism of the weapon are based on or otherwise substantiallysimilar to one of the Enumerated Weapons.3 A weapon is not a Copy or Duplicate under this Guidance if it meets one or more of the exceptions ((i)-(vii))contained in the statutory definition of Assault weapon in Section 121.42. Interchangeability Test: A weapon is a Copy or Duplicate if it has a receiver that is thesame as or interchangeable with the receiver of an Enumerated Weapon. A receiver willbe treated as the same as or interchangeable with the receiver on an Enumerated Weaponif it includes or accepts two or more operating components that are the same as orinterchangeable with those of an Enumerated Weapon. Such operating components mayinclude, but are not limited to: 1) the trigger assembly; 2) the bolt carrier or bolt carriergroup; 3) the charging handle; 4) the extractor or extractor assembly; or 5) the magazineport.If a weapon meets one of the above tests, it is a Copy or Duplicate (and therefore a prohibitedAssault weapon), even if it is marketed as “state compliant” or “Massachusetts compliant.”The fact that a weapon is or has been marketed by the manufacturer on the basis that it is thesame as or substantially similar to one or more Enumerated Weapons will be relevant toidentifying whether the weapon is a Copy or Duplicate (and therefore a prohibited Assaultweapon) under the applicable test(s).