I quote from what I wrote in the Brita's Weapon Pack mod page ( As new discussion ):

" If you are using the M1A1 mod ( The Abrams tank mod said in brief ) it is not compatible with the Brita's Weapon Pack because, for some reasons I wasn't able to pinpoint, the above mentioned mod add in the items context menu, when you select an item, the option/the voice to " rack " it, even if the selected item is something that normally can't be racked ( Like for example a showel, a knife, a flashlight, etc )
Soon as you click on the option to " rack " the item, the game completely froze for several minutes ( Even on a high end SSD drive ) and then quits to the desktop, completely crashing your game and possibly, in long terms, damaging your HD or SSD drives.
I've done very extensive tests about this before writing so I'm sure about what I'm stating here ( ...and to pinpoint the issue took ages ). I haven't tested in MP but in SP this is what you get if you enable the Brita's mod in conjunction with the M1A1 Abrams tank mod.
During the tests I've kept always the Brita's mod enabled as last ( with its relavant dependency mods ) and the M1A1 Abrams mod was enabled before it.
Following what happened to my PC I have discarded completely, for the time being and untill the issue with it will be not hopefully fixed, the M1A1 Abrams mod from my mod list and I haven't tried what could happen if you enable it, after, the Brita's mod.
Last but not least, be clear, my post here MUST NOT be considered as like some form of offence toward the M1A1 Abrams mod creators nor an attempt to diminuish their work ( IMHO this is a real pity because the M1A1 Abrams mod it's amazing! ), I've simply reported what happens if you use it in conjuntion with the Brita's Weapon Pack mod. "

As said I really hope that in the future you'll be able to fix this issue because, IMHO, your mod is briliant and amazing and it's a real pity that, so far, unfortunately, it can't be used with the Brita's Weapon Pack mod!!!