m1 carbines are explicitly restricted in NJ. There does not exist a M1 in existance that you can own in this state, don't even try.
New Jersey law restricts the ownership of certain semi-automatic and other firearms based upon their military appearance. The list includes:
Algimec AGM1 type
Any shotgun with a revolving cylinder such as the "Street Sweeper" or "Striker 12"
Armalite AR-180 type
Australian Automatic Arms SAR
Avtomat Kalashnikov type semi-automatic firearms
Beretta AR-70 and BM59 semi-automatic firearms
Bushmaster Assault rifle
Calico M-900 Assault carbine and M-900
CETME G3
Chartered Industries of Singapore
SR88 type
Colt AR-15 and CAR-15 series
Daewoo K-1, K-2, Max 1 and Max 2,
AR 100 types
Demro TAC-1 carbine type
Encom MP-9 and MP-45 carbine types
FAMAS MAS 223 types
FN-FAL, FN- AR, or FN-FNC type semi-automatic firearms
Franchi SPAS 12 and LAW 12 Shotguns
G3SA type
Galil type
Heckler and Koch HK91, HK93, HK94, MP5, PSG-1
Intratec TEC-9 and 22 semi-automatic firearms
M1 carbine type
M1 4S type, MAC10, MAC11, MAC11 9mm carbine type firearms
PJK M-68 carbine type
Plainfield Machine Co. Carbine
Ruger K-Mini-14/5F and Mini-1 4/5RF
SIG AMT, SIG 550SP, SIG 551SP, SIG-PE-57 types
SKS with detachable magazine type
Spectre Auto carbine type
Springfield Armory BM59 and
SAR-48 type
Sterling MK-6, MK-7, and SAR types
Steyr AUG semi-automatic firearms
USAS 12 semi-automatic type shotgun
Uzi type semi-automatic firearms
Valmet M62, M71S, M76, or M78 type semi-automatic firearms
Weaver Arms Nighthawk
The legislation also prohibits any firearms which are substantially identical to any of the above firearms; any semiautomatic shotgun with either a magazine capacity exceeding six rounds, a conspicuous pistol grip, or a folding stock; a semi-automatic rifle with a fixed magazine capacity exceeding 15 rounds. Any magazine with a capacity greater than fifteen rounds is prohibited, even if there is no semi-automatic firearm to accompany the magazine