I just received mine from SB, Brooklyn today via std USPS - ordered Friday afternoon. SB threw in 2 AAs free. What nice folks to buy from.

I asked SB (Bryan) several questions before purchase, he answered them all promptly and thoroughly. Excellent customer service IMO.

The RC-N3s are an excellent value. High quality construction, nice beam with AA. Can't comment on the cr123a beam, don't have any right now. Will probably use 16340s (rechargeable version of cr123a IIRC) eventually for lightweight backpacking trips. This shortened version is very small - good thing it has a nice lanyard or I'd lose it for sure by dropping it.

The black is black, the grey model is a light or faded gun metal blue color to my eyes. Like the other guy said - and I agree with him, it has decent spill.

I think you could very securely mount one to a h-bar with duct tape, electrical tape, or perhaps a couple conduit clamps from lowes with some tape or rubber for retention/finish protection. They don't really weigh much. AA model seems to be only ~1/2" longer than an old incandescent minimag.

I suggest you buy a couple. I may order a few more for gifts myself soon.