Gledeasy, thanks for the link. Left you a comment there even though it's an older post. Curios about the mini chassis.
When I ordered the stock their website had said the chassis added about 6-8 ounces. It's not apples to apples but these two stocks do weigh about 8 ounces different.
I went with the chassis simply for a rock solid set-up. If I we're trying to go as light as possible I wouldn't have used it, but the plus is I can use another LA rifle with the stock and keep a solid platform.