I like the idea of the Bohica upper. But as someone not very knowledgeable about the AR platform, I'm curious about how the AR (built originally around a much smaller caliber) holds up to such a big round. Is it that the upper is so massive that the lower is completely unstressed (or close enough) by firing the 50? Is the lower acting pretty much like a barnacle on a cannon? Are any bits of the average AR lower likely to be shaken to smithereens after a few hundred rounds of .50BMG?
Ideally, I'd like to buy SOME variety of .50 before the next [ban/attempt], and this seems like one of the more economical ways to do so. (Another being a Serbu -- not cheap, either.) The Bohica, being an upper, would have remained a legal option under the terms of the previous so-called ban, but the future is hazy.
timothy