removing the pin means you had an adjustable stock even if only for 2 minutes (gray area). that being the reason i don't have a single point sling adapter on mine.

the ct law as it was introduced on the 1st won't allow grandfathered mags. they expect you to permanently modify, destroy, or hand them over to local police. that's why i'd hold off before buying a bunch, or spending $100 on a drum. - i seriously hope they don't vote it into law.