I've been playing a lot and enjoying the game
The BAL a very popular AR but not as good as it use to be. It was nerfed a while back.
I use the AK on longer range maps with grip and silencer (ascend, comeback, defender, horizon, instinct, recovery, retreat, riot). I see people using the AK a lot lately. The HBR seems too slow. The burst mods haven't been good to me
for an SMG I use the KF5 with silencer and laser sight. I use it on the other maps (biolab, detroit, greenband,solar and terrace).
I've probably played the best I have ever played COD. I can sometime manage 5 warbirds in 1 round of Domination (before the intermission)
I run with the UAV with extra assist points and extra time
system Hack with assist points
Warbird with the offensive option (AI controlled)
If you can get all 3 streaks going at the same time it's pretty effective.
I sometimes run with a 4th streak and no weapons attachments (on my AK) and run with the Paladin as well