I think that second one just shows that it is cocked. I don't think its a loaded chamber indicator, is it? I don't have an XD, but I thought that this is what I had read.RRSA said:The Sprinfield XD has two loaded chamber indicators, on the top of the slide next to the Ejection port, and one on the back of the slide, where the hammer would be if it had an external hammer.
I like the one on the back of the slide because while the weapon is holstered you can check it, by feel.