Thanks Jeff for taking time to give me that thoughtful answer. I have recently built two rifles using psa uppers and lowers. These are my first "black" rifles. They are both minute of hog,(1.5 to 2 moa at 100yds) especially with reloads using barnes tac-x 55gr bullets (same as triple shocks). I have about $500 each in them not counting a Gisselle trigger I got on sale for about a hundred bucks for one of them. I really like the platform and they are fun to shoot. Just wondering if more money equals more accuracy, since mine almost never fail to feed or fire, so dependability is already there. Sounds like some upgrades help, but a guy who uses the rifles like me might not notice the small (relatively) differences.