Changed phong fresnel ranges on rifle and carry handle from [2 4 6] to [1 3 6] to reduce excessive glossiness

Better firing sound edits, courtesy of Robert Calais.

- Animation optimizations and fixes, namely regarding the "jerking" after the firing animation.
- Replaced most of the remaining handling and reloading sounds with those of Insurgency.
- Model smoothing tweaks and fixes.
- Changed selector switch position from safe to automatic.

Changed some of the handling sound effects to those of Insurgency.

Sound effect fix - more aggressive fading out in the shooting sounds, echo should no longer cut off.

Small shader tweaks - less gloss

- Slightly downscaled the viewmodel, albeit not by much; however, there is noticeably less clipping on the handguard and in the deploy animation.
- Reload animation tweak: a bullet is now visible in the magazine during reload.
- These changes also apply to the version w/o camera motion, which is linked to in the description.

Small tweaks regarding the speed of certain animations to be more in sync while playing online.

Minor bugfix regarding the firing animation not syncing with the look up and look down animations.