To that end I have a stainless left hand MRC extreme ascent coming from Prophet River in the next few days. They are listed at 5 pounds 10 oz but I have heard they can be as much as a pound heavier. That would be OK with me because I like a bit more heft as well.
Not to derail your thread but I've seen two iterations of those: one with a blind magazine (no bottom metal) that specs at 5#10oz., and one with full bottom metal that specs a little more. Both are marked "XAR" on the fluted featherweight contour barrels. Please post a picture when yours arrives as I'm curious as to which you wind up with.
RM