Rings and Base for Sako Quad Build

[m1a convert]

What rings and Bases should I use?

I know USO makes some (I think)

Who else makes some good ones? I want this to come out well, but I don't want to have to spend tons on rings and base if I don't have to.

 

[m1a convert]

Re: Rings and Base for Sako Quad Build

Anyone have any opinions on this?