I think I had one of their LRC Sporter stocks - it was very stiff, bolted up solid with a good centering of the barrel in the channel, but was pretty heavy.

So - if you are playing the weight game, make sure you pick the right wrapper for the block.

I didn't have any issues with a data point of one, but I did trade mine to a buddy to put on his magnum, it looks good, and he's happy with the result.