Was this just sarcasm? How can anyone comply with secret regulations?
Not really sarcasm. Admittedly a bit of hyperbole, but only a bit.
The Attorney General regs ("standards" actually) in Massachusetts were devised as a consumer protection ploy to ensure that firearms sold in the state meet certain requirements. They were, and are, distinct and separate from the Executive Office of Public Safety (EOPS) "Approved Firearms Roster" (just to confuse things a bit further, "firearm" in Massachusetts means "handgun"). The Roster is a list of handguns that have been submitted to the state by the manufacturer for destructive testing - such things as drop tests - and, upon passing, are approved for sale. The list of approved guns is published and updated at irregular intervals. So far so good, I guess, if you agree with the basic concept and the process (I don't) - but at least there's a published list, so everyone knows where they stand.
Now, back to the AG's regulations. Even if a gun is on the Roster, it may not satisfy the AG regs, which deal with such things as trigger pull weight, magazine disconnectors, etc. The problem is that the regulations are somewhat nebulous (for example, operating the handgun must require multiple motions such that a 5-yr old would not be able to fire it - whatever that means), and have changed without warning, notice, or due process over the years. In addition, there is no list published of which handguns satisfy the regs and, if asked specifically about a particular gun, the AG's office will decline to answer. Hence, "secret" and "not made public," IMHO.
If you can stand it, you can get a somewhat more objective review of all this at the Massachusetts Gun Owners' Action League
(GOAL) web site and a somewhat less objective, but more entertaining discussion in
this thread at the Northeast Shooters Forum or
this article from a Rhode Island newspaper.
ETA: the newspaper I linked to is actually published in Fall River, MA - near but not actually in Rhode Island