local sway_arms, stop_arm_sway do
            local smoothdamp     = FX.smoothdamp
            local arm_swayer     = FX.arm_swayer(char.HumanoidRootPart, humanoid)
            local arm_swayer_update = arm_swayer.update
            local left_shoulder  = fpv.view.HumanoidRootpart.LeftArm
            local right_shoulder = fpv.view.HumanoidRootpart.RightArm

            local left_upper_arm = left_shoulder.Part0
            local left_shoulder_c0 = left_shoulder.C0

            local right_upper_arm = right_shoulder.Part0
            local right_shoulder_c0 = right_shoulder.C0

            local axg = firing and 0 or 1
            local axv = 0
            local ax  = axg

            local ayg = firing and 0 or 1
            local ayv = 0
            local ay  = ayg

            local type_config = type_data[config.type].config

            local ARM_SWAY_X_DEGREES = type_config.ARM_SWAY_X_DEGREES
            local ARM_SWAY_Y_DEGREES = type_config.ARM_SWAY_Y_DEGREES
            local LEFT_RIGHT_X_SWAY_RATIO = type_config.LEFT_RIGHT_X_SWAY_RATIO
            local LEFT_RIGHT_Y_SWAY_RATIO = type_config.LEFT_RIGHT_Y_SWAY_RATIO
            local RELOAD_SWAY_X_MULTIPLIER = type_config.RELOAD_SWAY_X_MULTIPLIER
            local RELOAD_SWAY_Y_MULTIPLIER = type_config.RELOAD_SWAY_Y_MULTIPLIER

            local function update_arm_sway(time, delta)
                local dr = 1 - 0.9^(60*delta)
                axg = firing and 0 or reloading and RELOAD_SWAY_X_MULTIPLIER or 1
                ayg = firing and 0 or reloading and RELOAD_SWAY_Y_MULTIPLIER or 1

                ax, axv = smoothdamp(ax, axg, axv, Config.ANIMATION_TRANSITION_SPEED, delta)
                ay, ayv = smoothdamp(ax, ayg, ayv, Config.ANIMATION_TRANSITION_SPEED, delta)

                local x, y = arm_swayer_update(delta)

                x, y = ay*x*ARM_SWAY_Y_DEGREES/180*PI, ax*y*ARM_SWAY_X_DEGREES/180*PI

                local cam_cf = camera.CFrame
                local uv = cam_cf.UpVector
                local rv = cam_cf.RightVector

                local left_joint_cf     =  left_upper_arm.CFrame * left_shoulder_c0
                local joint_space       = (left_joint_cf - left_joint_cf.Position):Inverse()
                local transform_left    =  FromAxisAngle(joint_space * uv, y*LEFT_RIGHT_X_SWAY_RATIO) * left_shoulder.Transform
                left_shoulder.Transform =  FromAxisAngle(joint_space * rv, x*LEFT_RIGHT_Y_SWAY_RATIO) * transform_left

                local right_joint_cf     =  right_upper_arm.CFrame * right_shoulder_c0
                local joint_space        = (right_joint_cf - right_joint_cf.Position):Inverse()
                local transform_right    =  FromAxisAngle(joint_space * uv, y) * right_shoulder.Transform
                right_shoulder.Transform =  FromAxisAngle(joint_space * rv, x) * transform_right
            end