If I read you correctly, you shoot raw? In that case PM show you the colour space of the embedded jpg. That could very well be sRGB (a bit surprising, but still), even if you shoot jpgs in aRGB. Raw files themselves don't really have a colour profile (ok, that of the camera itself), the data gets interpreted by your raw converter which then converts it to a colour space (Lightroom and ACR use Pro Photo RGB for this), upon saving to a non-raw format you then can choose the final target colour space (e.g. Adobe RGB).
Take a jpg shot and check the colour profile of that. If that's also sRGB, I'd like to see the file to see what is wrong.