Ah yes, the AR2 from Half-Life 2, now back on workshop.👌

This addon is labeled as "Legacy".
Which means that it's an older version of the mod that's supposed to work with other older addons, or required for other addon that uses the older version of this addon.

Please be noted that this addon is a reupload, which means I'm not the original creator of this addon, but rather just the one who reuploads it back onto the workshop so that others can continue to use and enjoy.

This addon was reuploaded with permission granted from the original author.

Credits :
thatrtxdude - Original creator of the addon.
NeoLin - Reuploading the addon.