You're not ready for Grendel if you're still using AA, first step is learning to play without it.
Loadout - Weapon Pro has very good synergy with Grendel, the faster ADS is important and faster reloads/switching is also useful. I would personally use Weapon Pro/Retriever/Surveillance, possibly swap out Surveillance/Retriever with Maneuverability or Rapid Fire.
Keep in mind Rapid Fire isn't
hugely beneficial to Grendel as it is for assault rifles and neither is Maneuverability, when firing you want to avoid movement. Align modules with the gun's strengths and mid-long range is where Grendel shines, it's not a run'n'gun hipfire weapon and you'll have a very tough time against AR+laser users in small maps like East River, Skyline and Chinatown.
Me giving Boom tips, f***ing hell times have changed.
I appreciate your input! You're right, I may not be ready but I will be
I do like surv. quite a bit. I'm leaning twd, armor xfer, surv3, wp3. This is a loadout I'd use if I was map aware. I'm not yet. Yes, I'm BOOM, but I've clocked hours and I do love the game. I know ethically u can't look past/passed (I'm no grammar nerd) it, but I'm no slouch either
Something about bygones....