http://ypdcrime.com/penal.law/article265.htm
That is the link to the new laws as it was voted on. You can click on section 265.00 for definitions. I'll post what those are.

Looking at definition 3 we have the definition of a firearm.

Quote:
3. "Firearm" means (a) any pistol or revolver; or (b) a shotgun having
one or more barrels less than eighteen inches in length; or (c) a rifle
having one or more barrels less than sixteen inches in length; or (d)
any weapon made from a shotgun or rifle whether by alteration,
modification, or otherwise if such weapon as altered, modified, or
otherwise has an overall length of less than twenty-six inches; or (e)
an assault weapon. For the purpose of this subdivision the length of the
barrel on a shotgun or rifle shall be determined by measuring the
distance between the muzzle and the face of the bolt, breech, or
breechlock when closed and when the shotgun or rifle is cocked; the
overall length of a weapon made from a shotgun or rifle is the distance
between the extreme ends of the weapon measured along a line parallel to
the center line of the bore. Firearm does not include an antique
firearm.
So ANY pistol or revolver is a now defined as a firearm.

Now click on the 265.01-b for what defines Criminal Possession of a Firearm. Under 265.01-b section 1 we have the following.

Quote:
§ 265.01-b Criminal possession of a firearm.
A person is guilty of criminal possession of a firearm when he or she:
(1) possesses any firearm or;
Scroll down a bit and you get this little tidbit. Criminal possession of a firearm is a class E felony

Edit...

As pointed out by others, the Exemption section states that if you possess a license given out under the rules of section 400.00 then you would be exempt from charges related to section 265.01 for possessing a handgun. However, reading the hoopla you have to do for a license is a bit of an undue process there and infringement.