Don't get me wrong, it is decidedly unpleasant to be on the receiving end of the USGI .223 ball round, but...for my money the adult in the room needs to go big or go home. There are numerous .308 AR's on the market today, each vendor with their own version of proprietary. The only one that I am aware of that has not gone this route is Rock River. Their .308 AR's use standard FAL magazines (a big bonus). You can go mainstream: H&K G3 clone or FN-FAL. For me, the FAL is the hands down winner. Over the years, I have spent more time in South America than in CONUS, it is easy for a single soldier so go native and extend in country. I appreciated the no nonsense power of the .308 FAL over the Galil and M16A1 that proliferated, along with the AK/SKS variants in attendance. Reliability, ease of maintenance, no-carrier tilt operation, adjustable gas system, the list is long. It is not light, it is not an M-14, it is not an AR-10, it is not a .300 Blackout, it is not a G3. It is a here to there and long range rifleman's rifle. Need to shoot thru a cinder block wall? No problem. Need to disable a vehicle? No problem. Need to defeat cover? No problem. Need to do all that at 600 meters and beyond? No problem. In a firefight, nothing makes folks pucker up like the deep throaty bark of a .308, except for the bloop of an M79 or the sharp crack of a grenade. Like NVG/NOD, they are a game changer. Of these, only the .308 is obtainable by the every man. The DSA FAL is a factory available, warrantied rifle that is always less expensive to purchase, own and maintain than anyone's AR-10 variant. Magazines are readily available and also less expensive, and more reliable than any manufacturers AR-10 variants.