no animation applied to the left arm when aiming one handed pistol

[insomniaunleashed]

Detailed description of issue
Unlike the torch, when aiming the pistol (single handed) the left arm (non aiming arm) sticks to a fixed 45 degree angle and does not animate, looks weird, issue present in original ALS v4. Note that when not aiming the left arm does have animation.

Steps To Reproduce:

1. Run the ALS_DemoLevel in single (or multi) player
2. Select the pistol (hold Q and change weapon with mouse wheel)
3. Aim the pistol (right mouse) and move around

Expected Results:
Left arm should animate when aiming whilst moving or standstill.

Actual Results:
Left arm presents no animation standstill, and sticks to a static 40-45 degree angle. When moving and aiming animation present but still offset by 40ish degrees, weird weid
screenshot