I was more or less stressing the point that adding a chamber flag wouldn't make something that's not illegal at all "more legal" Plenty of on the list complete firearms don't have chamber flags. The AG can sue anyone, any AG in any state can sue anyone... I can sue anyone. No one should be afraid of getting sued for breaking imaginary laws. Also, it's clear that the poster did think this was law and that the representative at Sig thought this was law. We have enough crappy laws already, the more people that you let make up new ones and don't correct, the more people they tell, the more gun shops start believing it and the more the fake law is enforced.
Can't imagine it will be long before 90% of gunshops in MA take down LTC info for ammo purchases. Some Dick's clerks are saying it's the law, no one wants to be on the wrong side of a law so then it spreads like wildfire and unless you frequent boards like these, you don't know it isn't law ( I have 4 friends from highschool that shoot with me, not a single one has ever read the MGL's)