first: CMMG lower, RRA everything else, National Match, holds about 3/4 MOA 5 shot groups at 1000yards eating 77gr molly coated black hills match ammo.
second: CMMG lower, RRA everything else, Entry Tactical, M4-gery with all the bells and wistles; aimpoint, onepoint sling mount, KAC rails, Matech BUIS, Surefire weapons light, Grip pod, houge grip
third: Fulton .308 lower, DPMS everything else... still waiting on TAC-20 Upper... 4 more weeks to wait of the 16 week back order
Also have, 3rd upper 18" SPR upper with a 4-24x42 scope, total bastardized used parts upper, I paid $60.80 out of pocket, traded a bunch of crap for used parts and got a great upper out of it.
Working on4th upper, 20" SAM-R clone upper, not a cheap project for cheap shooting on NM rifle lower, waiting on back ordered parts, only missing a flip up front sight and gas tube pin.
I figure after the 4th upper is build I'll buy 2 more lowers, I have an extra FCG and an extra collapsable butstock just sitting here