upd: somehow i manage to make magazine appear, when i add it to weaponcomponents.meta, but still i cant change multiple magazines, like choose from "gunname_mag1" or "gunname_mag2", in trainer, so still need help

Guys, sorry if im post this not in right topic, so:
I realize i wanna make a addon weapon from replace mod:
https://www.gta5-mods.com/weapons/hera-arms-cqr-ar-15#comments_tab
(because i have another mod that replaces "carbine rifle")
when i find the guide how to install addon weapon:
https://www.gta5-mods.com/tools/add-on-replace-base-folder#comments_tab
so i used the ready to go .rpf from this pack for AR's weapon, and all working good, INSTEAD of attachments, like magazines , suppressor etc, i tried to make weaponcomponents.meta in the "ai" folder and past the all components i need for examle:
<Item type="CWeaponComponentClipInfo">
<Name>COMPONENT_CARBINERIFLE_CLIP_01</Name>
<Model>w_ar_cqr_mag1</Model>
...................
but its not working at all, when i open attachments menu in trainer i can just change the color (menyoo trainer)
SO guys, pls help me to understand which file i need to add and where in my DLC.rpf, where will be all of the gun components!

Hello guys, maybe someone can help me...
I cant enable some dlc's in game, i mean i love modded cars, and all working good for now, when i want to replace some CARS sounds, and now i noticed that i dont have some DLC's in my DLCLIST.XML, for example "mpchristmas2017" and i cant spawn cars: hustler, comet4 etc. So if i put the /mpchristmas2017/ in my XML file, the game crashes... I have 200+ addon mods, 999999 script files, but i cant use the sound mod because it replaces COMET4.AWC and i CANT use comet4 and the engine sound itself XD
Please help me, idk what to do, and sorry for my eng(