You need to update to 5.5.* (* version doesnt matter)

Yeah, update to 5.5 and make sure your sound files are in wav format.

Thank you both, i'll update to 5.5 and try it

Update - sound works now but the weapon is invisible in inventory and when i drop it on the floor however it is visible when it's equipped. Also when the weapon is held the position is a little bit high, do i change that in Blender or is it possible in Unity?

You sure it doesn't fall through the ground? Attach a box colder. You change the position by repositioning model_0 and 1. Attach a camera component to the icon and move it around till you see the weapon.

I already added box collider and the weapon doesn't fall through the ground because i can pick it up in inventory as nearby item. Is it possible this problem occurs because i have quads on my model?

I use quads and tris all the time, did you do any limited dissolving?

no didn't do any limited dissolving, should i?

Nope, was just asking cause it messes up the faces and sometimes they dont render. Could you provide me with screenshots if your item prefab? including importing settingsof the model and every child object of the item object (the data on the right side of the screen about the objects interests me the most) aswell as some pictures of the model itself in blender. Did you try normalizing the model? Assigning it to lod groups in unity, recalculating those bounds?

You could take a look at this as it cover basic weapons and as far as i know melee weapons have a simmilar setup

And you could join this discord[discord.gg] for more help regarding your issue

Yes i assigned lod groups but the recalcuate bounds button shows it's up to date also it looks like Unity didn't transfer tags and layers right when i updated it, they weren't in the right position, i changed that now, item should be as tag 4 and layer 13 right?

yep that was the problem, don't know why i didn't check that out sooner lol the weapon works fine now, thanks for helping

Nice, yeah I'd say import the tagmeneger.asset from the sources in unity and replace your tagmeneger.asset inside your unity project folder to have the corrects names set up