Not having any luck finding the Sport. Looks like if I want a S&W MP 15 of some flavor, I'm gonna have to come up with a little more cash and take a step up the ladder to the next rung.
About iron sights & optics again. I should be able to get a model with iron sights, and still top it with a scope, red dot, etc, would that be correct? To clarify: Meaning that the iron sights, or optic wouldn't interfere with the other.
And, if you could I'd appreciate any suggestions/recommendations you might have on an optic that's say under$99, OK a $100 then?
Once again, thanks for all your replies!