According to Springfield's website...WillieD wrote:If the firing mechanism on the XD is like a Glock then the gun is DAO. The trigger pull actually pushes the firing pin back and releases the firing pin. The trigger can not reset itself without the slide coming back, but it is still not considered a SA like the 1911's.Mithras61 wrote:My XD 45 Compact isn't DAO, it's SA. It has a long trigger pull and is striker fired, but the slide must be racked to cock it before it will fire. I keep it with one in the pipe, just like my 1911.
The XD mechanism completely cocks (preloads) the spring-charged firing pin so that the only function provided by the trigger pull is to release the sear and fire the gun. By contrast, the Glock "Safe Action" only partly preloads the firing mechanism, and the trigger pull physically completes the cocking action as well as releasing the firing pin. The XD is therefore a true "single-action" trigger design because its trigger only performs one function--releasing the firing mechanism. The Glock is a true "double-action" trigger design in that its trigger contributes to the actual cocking of the mechanism as well as releasing it.