I was ready to buy the Sig, but I think this thing beats it in a lot of ways. It is light without feeling cheap - it seems very solidly built, better than any of the other .22 clones I've looked at. Controls are excellent, field stripping is a breeze, the balance is excellent, there is plenty of rail space. The barrel is solid and not some cheesy thin shrouded barrel like some of the others out there. If you are looking at either the Sig or the M&P, you should definitely check this out before buying either of them.