This is an old thread but let me interject here since there is a lot of misinformation in this thread.
First things first. You should read NYS Penal Law Section 265, Subsection 265.20 titled Exemptions.
In this section, you will find the following;
..."Sections 265.01, 265.02, 265.03, 265.04, 265.05, 265.10, 265.11,
265.12, 265.13, 265.15 and 270.05 shall not apply to:
1. Possession of any of the weapons, instruments, appliances or
substances specified in sections 265.01, 265.02, 265.03, 265.04, 265.05
and 270.05 by the following:
(b) Police officers as defined in subdivision thirty-four of section
1.20 of the criminal procedure law.
(c) Peace officers as defined by section 2.10 of the criminal
procedure law..."
All actively sworn LEO's in the state of NY that meet the requirements of section 1.20 and 2.10 to carry a firearm as per the criminal procedural law are PERSONALLY exempt from all laws in NYS pertaining to the prohibition of ALL NFA firearms, The Assault Weapon Ban, and the high-capacity magazine ban.
When said LEO retires, the exemption goes away.
All federal laws pertaining to firearms and NFA still apply. The individual officer must still get the CLEO signoff on his/her Form 1/Form 4. The last Form 4 to be signed on Long Island that I know of was in the 80's and it was signed by a judge for a court officer who purchased a submachine gun and a machine gun. That officer has since retired and moved out of state.
There are many SBR's, SBS's, and suppressors owned upstate where departments are small and the Chief is friendly to his officers..