For anyone looking to solve this issue, I have developed a fix for this. I have found the 4 audio files directly responsible and after testing and preparation i will release a "fix mod" for this issue.

read over this entire post https://forums.gta5-mods.com/topic/222/tutorial-vehicles-weapons-how-to-do-add-on-s-replacer-s?page=1

it's not the easiest thing to do so you will need a knowledge of how to work with addons from the get go ... i suggest learning car addons first since those are significantly more popular than weapon addons.

anyone know how to fix a car that is making a lot of bottom out and scraping sounds ? ive talked to another member about this and their suggestion was to delete the sound which would work. however i would like to find a solution within the handling line since this seems to be where the root of the issue is.

Hey everyone, i seem to be having an issue, and i dont know what is causing this.
I use simple trainer and have downloaded the AK pistol addon.
I also have converted the Colt M16A1 1967 Model into an addon for personal use. using the assult weapon addon base from the download Add-On/Replace Base Folder... everything seems to be working i do not crash when i sawpn the guns in game and they show up with the ped holding them except one thing...
when i spawn the guns into game my ped (trevor) hold the firearm down next to his side... and i can not move i can open trainer and spawn another weapon, and i can pause the game... but i can not move the ped i cant open the weapon wheel and if i am next to a vehicle i can not enter vehicle also i can not look around or pan the camera in any way ... pretty much all controls are gone. anyone experience this and know how to fix it ?

@a63nt-5m1th Thanks man You Rock bro!

STRMODELFLAGS 2nd digit, what is the difference in the 4 abs flags?

@ikt Awesome thank you! is there any specific thing that you click next one you open it in there?

is there a way to find the CoM Z parameter of you're model?

when i step on the throttle the car spins out very quickly and i have trouble even just going around turns in the city or even just a uturn
if i go to initiate a u-turn .. say at a reasonable speed 15 mph or so ... when i start to input throttle the car suddenly whips around.
what value am i messing up here?