I have Advanced Armament M4-2000 Mod 8, AAC Ranger, AAC Pilot. LOVE THEM ALL
I'm also considering a Gemtech G5 and quite possibly a multi-platform Trinity for handguns through Roy over at Aussie Arms...
According to Silencer Talk:
The following states allow ownership of silencers: AL, AR, AK, AZ, CO, CT, FL, GA, ID, IN, KY, LA, ME, MD, MS, MT, NE, ND, NV, NH, NM, [glow=red,2,300]NC[/glow], OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, WA, WV, WI, and WY.
Check with any local SOT holder and they can advise you as to what your State will actually allow.
I looked at the Advanced Armament site and they list the following dealers in North Carolina, so one may presume silenced weapons for you is a simple phone call away:
Personal Defense Handgun Safety Center Inc. Raleigh NC (919) 779-6880
Class Two Enterprises, Belmont NC (704) 827-5566
Gunners Choice Outfitters, Dunn NC (910) 892-0909
J&E Firearms, Shawboro NC (252) 202-1393
Top Gun, Shelby NC (704) 616-0310