So, as I mentioned, there were two types of AR that I was definitely not going to build on my stripped lower:
The first was a floating-barrel flat-top varminter. The reason for that is because not only do I not currently engage in any varmint hunting, but I'm also not at the rifle range very often, and when I am, shooting bitty groups from a bench just ain't my bag. (This is not to say that I have any particular problem with varmint hunting, but the opportunity just hasn't presented itself.)
The other was an AR pistol, which I personally think is about the most useless thing this side of a kickstand on a tank. Muzzle blast like a flash-bang grenade, the ballistics of a .22 Hornet, and no butt stock? Plus I have to go find a rifle range to shoot it? Where do I sign up for some of that action? No, thanks.
There's actually a third type I will not be building: When I said I was thinking about an "A2-style service rifle", some folks apparently thought I meant a "Service Rifle", which is a perfectly serviceable weapon that has been fruited up with pinhole sight apertures, heavy barrel, an archaic sling, and six pounds of lead weights inserted into every available orifice to make it better suited for target competition. I will not be building one of those. When I shoot from field positions, I generally do it under the assumption that my targets are not going to give me time to unroll my mat, buckle up my coat, sling up, and set up my spotting scope.