Damien
Member
Hi
I have a M&P 15ORC. Because it has C (compliant) it has no barrel threads. I live in NJ and can't have a threaded barrel unless a muzzle brake is pinned and welded on which I don't want to do. I do have the rifle out of state a lot and would like to get a screw on thread adapter to mount a muzzle device when I'm not in Jersey. All the adapters I've seen for AR's are RH 1/2x25 threaded but give slightly different adapter collar ID sizes (differ by about .010 inch). I don't have a micrometer so I cannot accurately measure my barrel OD to the thousands. Any body out there know the size of or have a mic and ORC that can give me the exact size of the end of the unthreaded barrel?
Thanks much in advance
I have a M&P 15ORC. Because it has C (compliant) it has no barrel threads. I live in NJ and can't have a threaded barrel unless a muzzle brake is pinned and welded on which I don't want to do. I do have the rifle out of state a lot and would like to get a screw on thread adapter to mount a muzzle device when I'm not in Jersey. All the adapters I've seen for AR's are RH 1/2x25 threaded but give slightly different adapter collar ID sizes (differ by about .010 inch). I don't have a micrometer so I cannot accurately measure my barrel OD to the thousands. Any body out there know the size of or have a mic and ORC that can give me the exact size of the end of the unthreaded barrel?
Thanks much in advance
