If you're experiencing missing weapon reloading sound effects while reloading your weapons, follow these instructions:

Firstly, download the missing model files from the provided link:

[Link to download][1drv.ms]

Once downloaded, follow these steps:

Locate your Half-Life 2 installation folder, as Half-Life: Source runs from there.

The folder path should look like this:

1. (Your Disk Letter):\SteamLibrary\steamapps\common\Half-Life 2\hl1_hd

2. Copy the downloaded "models" folder into the "hl1_hd" folder.

3. After completing this step, the inside of the "hl1_hd" folder should look like this:
ㅤ
ㅤ
4. Start the game, go to "Options" tap on "Video" and check the option:

"Load the HD content if available"
ㅤ
ㅤ
5. Click "OK" and restart your game.

Now, you can enjoy reloading your weapons without any hesitations.