Sandy Hook families take gun case to state Supreme Court

[jimmy the one]

38. no cigar

straw man: The rule for demonstrative pronouns like "this" is the same as the rule for all pronouns: when in doubt, they refer to the closest antecedent, which in this case is "any other semi-automatic rifle that accepts a detachable magazine." Furthermore, "the AR-15" is a specific rifle, not a "kind of rifle." "Semi-automatic rifle that accepts ... etc." is a "kind of rifle."

The subject of the sentence was 'The AR-15' - not the semi automatic rifle which was part of the predicate:

"The AR-15 is functionally no different from any other semi-automatic rifle that accepts a detachable magazine. There are literally 10s of millions of this kind of rifle, owned by, again, literally 10s of millions of law-abiding citizens,.."

It is sequitur to presume the following sentence referred back to the subject of the first sentence, rather than the semi-auto clause.
I repeat, his wording was sloppy & ambiguous, and most people would agree with my interpretation, not yours.