There's an old, closed thread in which mapleck explains the model size categories. I find it to be correct, and I also wanted to add the sizes for the MGs. So here I'll repost it with the additions. Also, this is useful for reference, so maybe sticky it so people can check the sizes easily.
Mapleck's Post:
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)
-k2
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 (
confirmed)
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
Ok so here are the MG sizes (I'll add the rest tonight)
Code:
minimi: small
m60e4:large
m60: ?
mk48: small
mk46 mod: large
k3: small
k3 spw: large
mg36: large
rpk: large
other rpk models: ?
I tested these by modding them to a gun I know the size of.
Also, remember what happens when you cross gun sizes:
Code:
Modding a small gun to a large gun makes a small crappy gun.
Modding a big gun to a small gun makes a huge useless gun.
Modding a gun to the same category will be win.
I don't know the SG sizes, but I think the m3s90 is large. 