"In the wake of the news that the P320 has failed when drop tested by independent sources, Sig Sauer has offered to upgrade P320 pistol in the wake of the failures. Note that Sig Sauer is not issuing a recall of any kind, just that they are offering a program to upgrade the existing pistols with parts that Sig may have already developed."

http://www.thefirearmblog.com/blog/2017/08/08/breaking-sig-sauer-offers-upgrade-p320-pistols-wake-drop-safety-failures/

Not that long ago, Chris Bartocci -  a former technician for Colt Defense, LMT, and Otis Technology, uploaded a detailed video explaining the "shortcuts" the military took upon deciding what pistol won the XM17 designation:

****Sorry**** please delete, did not see this posted elsewhere.