I just got to say that I haven't had the chance to use it yet today. however straight out of the box, the look and the function of the locking system, the way the vice locks down on the grip, and the way the ttech carts and push bar fit into the grip are down right awesome! this machine was machined really well, with a no nonsense design. the grip in my opinion is one of the best designed cart grips I have seen. there is absolutely no way that the push bar can jump around inside the inner sleeve of the grip, and the way the carts lock and unlock into the grip is way easier to insert and remove than any other grip I have used. all of this is just my opinion straight out of the box I will post more when I have used it. in any event, I do know if I had any reservations, at this point they have been alleviated.