Currently its set up on an Aero lower with an Aero LPK and Shockwave KAK brace.
I have a GHW Tailhook 2.0 on the way and a BCM LPK that'll replace the Aero LPK, as I recently built an M16A4 clone with the BCM LPK following other advice I saw on P-F, and I'm a believer now and will gradually replace all of my AR LPK's with BCM parts as time/money permits.
I was going to install a Battlecomp 2.0 in place of the A2 flash hider, but after shooting a 10.3" SBR with one installed, I came to the same conclusion offered earlier about muzzle brakes on sub-14.5in 5.56 guns - a suppressor QD mount is the only reason to ditch the A2 unless you REALLY like concussive headaches despite doubled-up earpro.