Go to the BP_P1911 and in the class defaults search for Movement Speed, next set the Walking Aimed to 180 and the Aimed to 180.

Next go to the BS_Aim_P1911 blend space and in the asset details set the Vertical Axis to 180.

Next in the BS_Aim_1911 blend space make sure the bottom point animations are set to the same animations in the image below. (Ignore the numbers in the brackets in the screenshot) You can set the points animations by right clicking on them and selecting the animations.