First off can I purchase this in NJ? https://grabagun.com/riley-defense-inc-rak47-7-62-x-39-16-barrel-10-rounds-bladed-grip.html
Second can I replace the integrated shark fin pistol grip with this? https://www.robertrtg.com/store/pc/POLISH-BERYL-AKM-BLACK-PISTOL-GRIP-NEW-345p1607.htm
Will it still be NJ Legal or no with the new pistol grip?