Another point on the XCR that seems to have improved dramatically since the XCR release. Some of us early adopters were left out in the cold to find solutions to the rifle ourselves. Some of these fixes seem to have made it into the new production rifles, but no effort has been made to correct the ones already out there, which I think is a mistake on Robarm's part.
When a friend comes to me and says, I want a non restricted 223 semi, they always make a trip to TSE for a Sig. I have shot both the Tavor, and the XCR in a variety of conditions, and if I wanted non-restricted, that I was going to shoot, I'd go with a sig.