Based on recommendations here I purchased the American Defense QD Recon Mount from an Amazon.com dealer. The mount locks rock solid and seems really high quality. Anyway I’m installing it on my BCM SPR and 1 of the 4 hex screws on the base appears to not be threaded. The hex screw just drops into the whole and will not tighten. The mount appears very secure with 7 of the 8 ring screws but not sure whether to send this back to the Amazon dealer or if there is a fix without the hasle of sending the mount off to the dealer or to ADM.
Thanks