Antoha256M's Simple Guns Datapack is one of my favorite datapacks. Unfortunately, it has not been updated in some time, and does not work in current versions. Hopefully Antoha256M releases an update in the near future, but until then, here is how to get the datapack working.

PS: I originally wrote this as a comment on the Simple Guns post, but the comment was too long and got cut off, so I'm writing it here instead.

Here is how to get this datapack working in the current version:

Resource Pack:

Step 1: Go into the resource pack by going to %appdata%-->.minecraft-->resourcepacks-->simple guns-->assets-->minecraft

Step 2: Create a folder named "atlases" (all lowercase)

Step 3: Create a .json file named "blocks.json"

Step 4: Copy and paste this text into blocks.json:

{
"sources": [
{
"type": "directory",
"source": "simple_guns",
"prefix": "simple_guns/"
}
]
}

Step 5: Reload resources by pressing F3 and T at the same time


Datapack:

Step 1: Go into the datapack by going to %appdata%-->.minecraft-->saves-->your world-->datapacks-->simple guns-->data-->simple_guns-->tags-->blocks

Step 2: Open air_bullet.json

Step 3: Find the line that reads "#minecraft:carpets" (should be line 7)

Step 4: Change this to "#minecraft:wool_carpets" (you just need to change carpets to wool_carpets)

Step 5: Go to air_bullet4 and repeat steps 3 and 4

Step 6: go back to your world and use the command /reload

This should completely fix the datapack for current versions. For reference, I did this on 1.20.1, but it should work for any 1.20 versions.