(e) a semiautomatic rifle, a semiautomatic shotgun or a semiautomatic
pistol or weapon defined in subparagraph (v) of paragraph (e) of
subdivision twenty-two of section 265.00 of this chapter as added by
chapter one hundred eighty-nine of the laws of two thousand and
otherwise lawfully possessed pursuant to such chapter of the laws of two
thousand prior to September fourteenth, nineteen hundred ninety-four;
(f) a semiautomatic rifle, a semiautomatic shotgun or a semiautomatic
pistol or weapon defined in paragraph (a), (b) or (c) of this
subdivision, possessed prior to the date of enactment of the chapter of
the laws of two thousand thirteen which added this paragraph;
(g) provided, however, that such term does not include:
(i) any rifle, shotgun or pistol that (A) is manually operated by
bolt, pump, lever or slide action; (B) has been rendered permanently
inoperable; or (C) is an antique firearm as defined in 18 U.S.C.
921(a)(16);
(ii) a semiautomatic rifle that cannot accept a detachable magazine
that holds more than five rounds of ammunition;
(iii) a semiautomatic shotgun that cannot hold more than five rounds
of ammunition in a fixed or detachable magazine; or
(iv) a rifle, shotgun or pistol, or a replica or a duplicate thereof,
specified in Appendix A to 18 U.S.C. 922 as such weapon was manufactured
on October first, nineteen hundred ninety-three. The mere fact that a
weapon is not listed in Appendix A shall not be construed to mean that
such weapon is an assault weapon;
I'm not sure if this is the "current" version, or if they haven't updated that site yet, but when I searched the Safe Act summary, it said the same thing.
The way I read it, a detachable mag rifle is exempt and doesn't count as an assault weapon, as long as there is nothing larger than 5 rounds made for it. I think that's where the confusion comes from. I'm not a lawyer, so take it for what it's worth.