What does each .LTB mean?

Ok, i extracted the GUNS_M_PV_SMG.REZ. I found all these diff file for all the submachine guns. All the ones with "UZI" in it were:

1.CM_HND_SP_DF_UZI_SH
2.PVMSH_UZI
3.PVMLA_UZI
4.UZI_ANIBASE
5.PVMLA_W_UZI
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What I am trying to find out is what all of them mean.
Could someone help me out a little?
Thanks.

The the UZI_ANIBASE.ltb is the animation storage, like reloading and stuff. That's all I know, I just swap the PVMLA's.

i think the long CWM thingy is th way the gun behaves, such as firerate. but i may be wrong.

and as for the PVM ones i believe they have something to do with matching the textures with the models, bu ti may be wrong.

Thanks to both of you. I thanksed lol.