Yo, I noticed your question on Internetianer's profile about the semi-automatic weapon function. It's actually a glitch due to the update on 9/15/2011. The weapons themselves still operate properly, but due to the update, any weapon skin that uses a script that isn't for sounds is now bugged (weapon_sg552.txt for example). The new line that was added to the weapon scripts was "FullAuto" 1, which is just under the "WeaponType" line. To make the weapon semi-auto for offline play, change "FullAuto" 1 to "FullAuto" 0. Of course, by doing this you will run into an irritating bug in online play, which would be the firing sounds cutting off after the first initial shot from the weapon and staying silent if you continuously hold down the firing button. For offline play, it's actually kind of fun, but if you are doing online play, it's very irritating. If you want to examine the changes, look in my submission here for the new script files, directly from the game cache. If the skin is left-handed (or right-handed for lefty players) when you use it, just change the "BuiltRightHanded" "0" line to "BuiltRightHanded" "1".