I bought the SD40 instead of the nine. I have found out most aftermarket barrel companies will make a conversion from .40 to 9mm but it wouldn't work the other way around. I hope somebody (stormlake, KKM?) makes one soon because I really would like to shoot the SD9 and see if it shoots as good as the 40 does. May I ask, what kind of groups you are getting at what distance with what ammo? I have found I can get (while standing) three inch groups (center to center) with the SD40 using the Winchester 165gn white box 40's. As far as Smith & Wesson offering a trade in for Glock magazines, nice thought, but I don't see it happening any time soon. At over $35.00 for an exta magazine, it sure would be nice!