the amendment modifies the definition of
a "large capacity ammunition magazine" by inserting the word "permanently" in
between "been" and "altered."

 The State recognizes that some of its representatives may have provided
informal advice to the effect that an ammunition magazine may be temporarily
blocked to hold no more than 15 rounds; however, the Attorney General has never
expressly adopted this position. To the contrary, through the promulgation of
this regulation, the State expressly rejects that interpretation of the
statute. Any person who currently owns or possesses an ammunition magazine
which has been temporarily blocked from holding more than 15 rounds is hereby
advised that he or she may retain possession of that ammunition magazine until
the effective date of this amendment, that is, the date the notice of its
adoption by the Division of State Police is published by the Office of
Administrative Law in the New Jersey Register, see N.J.A.C. 1:30-6.6. During
this time period, a person who owns or possesses an ammunition magazine which
has been temporarily blocked from holding more than 15 rounds shall either: (1)
transfer such ammunition magazine to any person or firm lawfully entitled to
own or possess a large capacity ammunition magazine; (2) render such ammunition
magazine permanently incapable of holding more than 15 rounds; or (3)
voluntarily surrender the ammunition magazine pursuant to the provisions of  
N.J.S.A. 2C:39-12. After the effective date of this amendment, a person who
owns or possesses an ammunition magazine which has been temporarily blocked
from holding more than 15 rounds shall voluntarily surrender the ammunition
magazine pursuant to the provisions of N.J.S.A. 2C:39-12 or risk prosecution
for unlawful possession of a large capacity magazine pursuant to N.J.S.A.
2C:39-3(j). Finally, N.J.A.C. 13:54-1.2 has been amended to include a
definition of "pistol grip" and "semi-automatic." These definitions are
identical to those contained in N.J.S.A. 2C:39-1(z) and (x), respectively.
Specifically, "pistol grip" has been defined to mean a well-defined handle,
similar to that found on a handgun, that protrudes conspicuously beneath the
action of the weapon, and which permits the shotgun to be held and fired with
one hand, and "semi-automatic" has been defined to mean a firearm which fires a
single projectile for each single pull of the trigger and is self-reloading or
automatically chambers a round, cartridge or bullet.

Quoted:
How about sending all your 20 and 30 rounders to me for safe keeping.