I understand that the 5.56 x 45 is the current "sweetheart" of the self-loading rifle crowd I also understand how well it shoots accurately at 250 yards and all. As a party of one, I don't like the "plastic" aspect of the AR15/M4 or whatever you want to call it. IMHO, it has very little in the way of "spirit". It fires a 55 grain pointed FMJ or PHP at extremely high velocities. Big deal. It is fine for varmints. and it works fairly well for deer. It seems that anyone with a CNC machine can crank out an M4/AR-15 in a matter of hours. *yawn*. We have heard it all before. I am a Vietnam era Navy veteran, and the son of a BM1 (PNA to Chief 13 times). He was Underwater Demolition Team (pre-SEALS)/Navy Rifle Team. Pearl Harbor Survivor, (7 1/2 ships sank from beneath him during WW2) and was also a veteran of the Korean Conflict. (I learned at my daddy's knee). War stories of the M4 M16 are for another thread. There are enough of them to circumnavigate the globe. I prefer a .30 Caliber or larger diameter slug, regardless of platform. At ranges up to 150 yards, the .30 Carbine gives up little to the 5.56, and If I want to shoot any further, I'll use either my .30 Soviet (7.62 x 39). after 200 yards, I will use my bolt-action Spanish Mauser in .308 Winchester. This is not the thread to tell me how well you AR-15/M4 kills deer blah, blah, blah. We've heard all about it for 51 years (1965). Is anyone else unimpressed/bored stiff with the AR15/M4?