I just obtained this adaptor and am so impressed with the quality. Clearly, every step of the design was very well thought out, from the knurled edge which provides excellent grip and looks great, to the unique safety undercut in the barrel, which is the best design I've ever come across. Okay, I know it's only an adaptor, but it's in the very highest level of design and quality in any adaptor I've used, and of course, it's very reasonably priced. Only question is, why don't FLO do more?