The lowdown on New York
Another thing I have noticed is that many online and catalog vendors say that they can ship magazines to New York State as long as their capacity is no more than 17 rounds and to New York City as long as the capacity is no more than 10 rounds. This seems to contradict the state-wide limit of 10 rounds. Do they mean that only LEOs can get those 17 rounders and not Joe Blow shooting enthusiast?
First, here’s New York State’s definition of a large capacity feeding device:
Penal 265.00 Definitions
...
23. "Large capacity ammunition feeding device" means a magazine, belt,
drum, feed strip, or similar device, manufactured after September
thirteenth, nineteen hundred ninety-four, that has a capacity of, or
that can be readily restored or converted to accept, more than ten
rounds of ammunition; provided, however, that such term does not include
an attached tubular device designed to accept, and capable of operating
only with, .22 caliber rimfire ammunition.
It essentially matches the federal definition.
In New York State, the military and law enforcement has always been exempt from restrictions on "assault weapons" and "large capacity ammunition feeding devices" (Penal 265.20(1))
New York State has no laws limiting the possession or transfer of legal magazines, although New York State *does* prohibit firearm dealers from selling handgun ammunition to anyone that doesn’t possess a pistol license. (Penal 270.00(5))
New York City, however, has several laws that cause lots of confusion.
In New York City, only licensees or permittees may possess any kind of handgun or long gun magazine. (NYC Admin Code 10-131(i)(1))
In New York City, a magazine that holds more than 17 rounds is illegal, regardless of manufacture date. Further, it is illegal to possess a handgun magazine that extends past the grip. (NYC Admin Code 10-131(i)(6)(a))
In New York City, licensees may receive and dispose of handgun magazines to licensed firearm dealers ONLY. (NYC Admin Code 10-131(i)(7))
That’s right...I can’t even give a plain ol’ 10 round Glock 17 mag to my buddy, who also has a Glock 17 listed on his license, simply because we live in NYC. If we lived outside the city then we could make the transfer.
That said, neither state nor city law limits the definition of a dealer in firearms to dealers within New York. I buy ammunition from Ammoman and I could buy a magazine (that's legal in New York City) from any FFL in the country.