When I lived in NYC I registered my H&K SL-8. When I sent the form in, they sent me a letter back and asked me to contact them. I did and the guy asked for a picture of the rifle "because doesn't Heckler & Koch make assault weapons." So I sent in a picture and they returned the registration form with the annotation "no pistol grip" and "5 round capacity." I know someone else who has a currently registered SL-8 in NYC.