I recently purchased a gen 2 Mrod chassis from Dave at RAI. After getting it adjusted to my liking, this thing is amazing! TOTALLY changes the fit and feel of the Mrod making it much easier to shoot off hand and much more comfortable. The narrow AR style fore end is way nicer than the overly wide wood stock. This stock also makes the gun much more balanced. Not sure about any weight difference, but it feels lighter,might just be the better balance, I will have to do a weight comparison and post later. You couldn't ask for nicer people to deal with either, Dave invited my wife and I to join them for dinner when he found out we didn't live to far apart. Very nice people, very solid product, what more could you ask for?
I highly recommend the Gen2 Mrod chassis from R Arms Innovations.