I bought a conversion kit for my Sig P229. You know, cheaper to shoot, better to practice with, etc, etc. I can honestly say, it's great to "plink" with, but I certainly wouldn't use it as a training aid in place of the real thing. As Sigs are notoriously top heavy, the exchange kit, being light aluminum, throws the weight way off. The grip is obviously the same, but it feels like a completely different gun. And because of the way the mags are designed it never holds the slide back with any .22 conversion mag on last shot. I will use it if I have a newbie with me because its a .22 but other than that, I dont seem to use it very much. And being from Sig, it wasn't necessarily cheap.