I put together the perfect .308 AR.
Now keep in mind, when I say that, I mean it's the perfect one...
for me. I was looking to get into a .308 because I wanted the better terminal ballistics of the heavier round. What I didn't really need, was the increased range. This was to be a defensive combat carbine, but as it was to be "defensive" in nature, not one I would need to reach out long distances. Just maybe with a bit more oomph than the 5.56, or the ability to punch through cover better.
I did still want to keep it in as small, and light a package as I could. I like a patrol carbine, not a full on sniper rifle.
On the other hand, I've seen guys go too far with the "smaller is better" theory building 10" .308 pistols that though probably fun to play with, would pretty much cut the .308 off at the knees. I tried to make a decent compromise, and I'm pretty happy with the result.
Receivers... Aero Precision with their LPK
Barrel... BA Hanson 14" with pin-and-welded Warcomp
Rail system... Midwest Industries
Scope... Primary Arms 1-8 with the ACSS reticle
BUIS... Troy with tritium
BCG... Lantac enhanced
Recoil system... JP Captured
Trigger... Geissele SSA-E
Furniture... Magpul CTR stock, MOE grip, MVG M-LOK
Weaponlight... Surefire M300 Scout Light
Leftover ambidextrous safety that I can't remember where I got...
Leftover scope mount... same deal... just happened to work out well.
Anyway, the end result is the rifle is a bit heavier (as expected being a .308) but still very easily carried as a patrol carbine. I lose some velocity, and power going down to 14", but not as much as going crazy, and doing the full on SBR 10" thing. It still packs a lot more punch than a 5.56. It's very controllable. Not sure if that's because I'm a big dude (6'1" 280) with 28 years of Army experience, or the very effective Warcomp (probably both) but I like it. I really like the ACSS reticle.