Several guns changed to right handed + 9mm buff

Included weapons are:
Normal shotgun
Combat shotgun
L6 SAW
Glock (revert of a previous flip I did, my bad)

Since there's no -real- consistency with the way guns face this should work. Shell ejection ports on shotguns are now on the right side of them. L6 saw 'belt' feeds into the weapon from the left of the gun and ejects spent casings out the right, which is how most 'merican light machineguns feed.