What I find interesting about these pistols is that, according to Ruger's early publicity about them they meet all the latest US Military standards - yet Ruger did not submit them to the military's competition.
I noted that too. Here a few completely speculative reasons why they may have done this:
1) Many civilian shooters are attracted to guns that are "milspec" - in other words, it is good marketing.
2) Some police agencies many simply require that pistols meet the military's requirements.
3) Perhaps that greatest reason is that should a major national emergency require a rapid procurement of more pistols, they would be eligible at that point. Ditto if they should want to bid on pistols for foreign governments, something Ruger has in fact done.