"This bill prohibits possession of all magazines with the capacity to contain more than ten rounds, regardless of the date of manufacture."
So... there's no option for modifying a magazine holding more than 10 rounds of ammunition. Even if altered, it still has the capacity to hold more than 10 rounds.
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The law allows possession what they term 'antique' magazines (50yrs old and older) that have a capacity of more than 10rds.
They must be registered with the NYSP, they must be usable only in a firearm that is also within the '50 y/o and older' class, and possessed only by someone that is legally allowed to own a firearm in NYS.
That class of magazine is allowed to be brought in to NYS at anytime forward, even after the 1 yr anniversary date of the law. It must be registered with the NYSP with in 72hrs.
As well if a registered magazine is disposed of/sold, NYSP must be notified with in that same 72hr time period.
M1 Carbine mags come to mind here.
Currently possessed hi-cap magazines that were legal under the old NYS AWB are now not allowed under the new law.
You have 1yr to dispose of them or you can 'permanetly alter' the existing hi-cap magazine to hold:
>10rds till 4-15-13
>after 4-15-13 it has the be altered to permanetly hold only 7 rds.,,and the magazine that was altered to hold 10rds can now only be loaded with 7 rds.
The alteration must be 'not readily and easily reversed' so as to make the magazine able to receive more than the 10rds,,then later the 7rds depending on the date it was converted.
Yes, the question of what 'not easily reversible' is should be answered and illustrated.
My first inclination is that the heavy crimp in the mag body on both sides as the manf'rs now do to limit follower travel would comply. Glueing or placing a spacer below the spring would not probably.
Moving would be the best solution..