My (extremely brief) summary:
There was a good showing of gun owners opposed to the bill. They pointed out specific Sections numbers of the most troublesome provisions, and provided specific facts and data to back up their assertions. Jim Wallace kicked ass, both with his testimony, and with his answers to the questions he was asked. I particularly liked his points on suitability, and how letting EOPS and MCOPA determine suitability standards is utterly ridiculous. There was a panel of 4 reps that also made great points, including the last guy who listed out a whole bunch of misdemeanors that would disqualify someone from getting an LTC under the new law. Exploding golf balls, ha!
The bill supporters did their usual song and dance about "gun safety" and "the children". There was very little said about the actual bill, other than that it was "comprehensive". One group was trying to shoehorn some "safe schools" stuff from a completely unrelated bill into this one, they had a panel of 6 or 7, including a baby.
Some of the committee members asked some very good questions of the bill's supporters that shone a light on their BS, such as the one rep whose name escapes me that pointed out that MA does in fact record all firearms transactions already.
I think that the best we can hope for at this point is getting some of the really bad provisions removed (expansion of suitability to FIDs, private sales at dealers, >1 year misdemeanor LTC disqualifier, AG control over approved firearms roster, etc.) Hopefully the committee got the message that these provisions (and others) just won't do any good, and will just harm lawful gun owners.