That'll be a cold day in Hell.
Romney retreats on gun control (Misleading headline)
Excerpt:
"But perhaps the most significant gun legislation Romney signed as governor was a 2004 measure instituting a permanent ban on assault weapons. The Legislature mirrored the law after the federal assault weapons ban, which was set to expire. According to activists at the time, the bill made Massachusetts the first state to enact its own such ban, and Romney hailed the move.
"These guns are not made for recreation or self-defense," he was quoted as saying. "They are instruments of destruction with the sole purpose of hunting down and killing people."
Apparently, a ban on semi-automatic "assault weapons" isn't enough for this liberal gun-grabber.
Romney Supports Ban on Weapons of 'Extraordinary Lethality' (December 17, 2007)
Actually, the Ma. law was not going to expire. The Gun Owners of America League put together a plan to weaken the Ma. gun ban and add protections for gunowners. Mitt supported their effort, and in the end they passed a bill that made life much better for gun owners in Mass.
The bill you claim was anti-2nd-amendment was actually an improvement for gun owners, and was supported by GOAL and the NRA.