I picked up a DPMS LR-8 AP4 this morning for $1200. It's about two years old and has never been fired. I was not planning to enter the AR world until next summer but in light of the uncontrollable events as of late, my hand was forced....so to speak. I'll pick up some mags as I find them. Has anyone done any chronograph work with the 16" barrel vs. a 20"? I'm curious about the velocity loss and wondering what to expect. The barrel break-in procedure seams a bit ridiculous. Overall, I'm pretty excited about it....would not have bought it if the gouge was applied.