It is human error, the switch was probably not soldered correctly, I doubt that there is a bad batch that everyone needs to worry about, I also dont understand why they were so concerned because it is an M3 when there is no difference in the technology between it and the M2. The old AR address is our address, we resigned from Aimpoint last year, the new address is
14103 Mariah Court
Chantilly, VA. 20151