Ok, I kinda figured that all the guns have a seperate gun "category" such as to Large and Small,
So if you change a gun thats "large category" to "Small" category, you end up with a really small gun that looks very.....puny...
but if you change a small gun into a big gun, it turns oversized :P
I said that in my other post, but I'm gonna make a formal list here:
Small Auto Rifles:
-AK-47 & (Gold)
-M4a1
-Ak-47U
-AUG-A1 & (Black)
-G36E & (G36Ke)
-M16A3
-SCAR L & (Trispear & Black)
Large Auto Rifles
basically everything else)
-FAMAS
-M416
-AK-103
-AUG-A3
-FAMAS G2
-G36C
-L85A1
-M14
-M417
-M416 CQB
-M4A1 SOPMOD
-M6A2 & (M6a2 SRT)
-Tar-21
-Mtar-21
-SG550
-SIG556
Small Sniper Rifles:
-L96A1
-Dragonuv(someone confirm this)
-M24
-SR-24(someone confirm)
Large Sniper Rifles:
-PSG-1
-L115A1 & (L115a3)
-L96A1 ARCTIC WOLF
-M107CQ
Small Sub Machineguns:
-UZI
-K7
-K10
-Mp5 (dunno about other mods)
-UMP
-MAC-10
Large Sub Machineguns:
-PP-19
-P90
-MP7 & (ALL)
-Scorpian (someone confirm)
Don't know ANYTHING about shotguns, if anyone want to provide information, please do so

And if theres any mistake in the thread, also tell me :P