Allen, sorry I'm late with this and hope you'll catch it. First, great uppers don't come cheap ! I get mine ( and I've had four built by him) from
http://www.Insight Shooting Systems.com. Lee attends to the minutest of details because he's a perfectionist. My lowers are now all Rock Rivers with their superb match triggers. I think they break at about three pounds. However, since I will only use these ARs for varmint and bench shooting; I went a step beyond and now have a boss, two stage, bench rest trigger. All I did was replace the disconnect spring with one .005" thinner. Now the RR breaks in ounces, not pounds ! And I'm 100% sure it's as reliable as before the change. I've run 500 plus rounds through it so far with nary a hiccup. Plus, many rounds through the two 20 TAC (driver) ARs. BTW, those 20 TAC (drivers) ARs shoot just as good as the 223 A.I. I wore out my first 223 I got from Lee; not by shooting too much but somehow in storage, rust got into the bore and ruined it . I was one sick shooter ! Never happened before in all my years of shooting; and I pray it won't happen again !
Oh, and if you save your brass, you might want to check out
http://www.3bucc.com for his catcher. Again, it's a quality piece so expect to pay. Charles