I have a M&P15 which by NYS is an assault weapon. I purchased a MP15MR2 mag.release conversion, which does not allow the mag to be released during operation.
Now my ? should I amend my registration or not?
This is an unusual first post IMHO. Direct your question to the NY State Police if you live in NY and/or to your CO, if you're on AD and living on a USCG installation in NY State.