I've been modeling half of the object, and when Kurt duplicates it, the other half is already inverted and ready to go. In my case however, it simply duplicates right on top of the original, and I'm trying to invert it/reflect, and transform it and what not, but i dont understand how. I just want to have the other identical half.

I see the duplicate special and duplicate transform options, is it one of those? Or mirror? When i mirror it, it seems to act kinda weird, maybe its a setting i have it on, but its the closest i've had. Im sorry, im sure its pretty simple, but i cant figure it out.

If anyone can direct towards an operation that reflects an object, that would be very helpful. Thanks!!