DAO is good enough for me, if the striker retracts ever so slightly before the gun is fired. This was the logic that kept the XD out of SSP since the striker on the XD's apparently does not and early on Springfield advertised it as a SA gun not a DAO. The XD striker does not retract when the gun is fired. There are youtube videos illustrating this if you care to look for them.
As to wanting to be referred to "some primary source" I suggest you do some of your own homework. If you want to start a new thread fill your boots.
Take Care
Bob
But I was hoping you'd do all the work for me.