I recently bought an older style SF M2 with the ribs/fins, but it does not have any of the patent numbers on the body. Were M2s mader without these numbers?
Unlike my C2, the M2's bezel does not have the caution label, the bottom surface of the body opposite the clip is rounded, and the tailcap does not have milled surfaces around the knurling. Also, the "Surefire" logo on the body is not real crisp.
Unlike my C2, the M2's bezel does not have the caution label, the bottom surface of the body opposite the clip is rounded, and the tailcap does not have milled surfaces around the knurling. Also, the "Surefire" logo on the body is not real crisp.