SAS_ asset in Sci-fi_FPS_Pack/Blueprints/Weapons to tune a weapon’s animation. For example, AC_Gepard references SAS_Gepard through Animation Settings. Duplicate the asset and assign your copy there before experimenting.
These assets use BP_Shooter_AnimationSettings, which extends the common Gameplay Framework settings. The first group controls poses and movement; the shooter group adds aiming, recoil, and sway.
Try an adjustment
DuplicateSAS_Gepard and assign it to your AC_Gepard child view. Change Ads FOV from 80 to 70, equip the weapon, and aim. You should see a narrower view. Restore the value, then try reducing Idle > Intensity to compare idle movement.