Reflex sight, needs a better shader and lights.

I’ve finished modelling a reflex sight, which I think looks a bit too plain but I’m going to ignore that part for the moment. I want to make the shaders, in Yaf(a)Ray, look more metallic on the grey parts. The two area lamps that point diagonally down aren’t really making that look I was trying to get. It should cast clear shadows and really bring out the specular shading on the metal. Kind of like the infinite white plane look. here’s what I’ve got so far.
edit - The grey part shaders is as follows:
material type: glossy
diff colour: 0.6 0.6 0.6 in RGB
glossy colour: white
diffuse reflection: 1.000
glossy reflection: 0.200
exponent: 100