I have to say, this is one of the better innovations I've seen in a while. I know there have been some other iterations of this type of product, but they really seem to be on to something here. It looks extremely user friendly. Repeatable and efficient. Works with a variety of rails and with your existing rifle. I hadn't considered the ability to quickly swap barrels between something like 300 BO and 5.56, but that's an interesting concept to not require changing the whole upper assembly. Frankly, I haven't invested a lot of time investigating similar "break-down" products. So I'm not sure how the specs stack up against those that have come before. Ultimately, the price seems quite reasonable, and I'll be interested to see some user reviews. Anyone had a chance to handle one?