Gun refactor (#8301)

Co-authored-by: Kara <lunarautomaton6@gmail.com>
Co-authored-by: T-Stalker <le0nel_1van@hotmail.com>
Co-authored-by: T-Stalker <43253663+DogZeroX@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Server/Tools/ToolSystem.MultipleTool.cs

@@ -64,7 +64,7 @@ namespace Content.Server.Tools
                 return;
 
             // Sprite is optional.
-            Resolve(uid, ref sprite);
+            Resolve(uid, ref sprite, false);
 
             if (multiple.Entries.Length == 0)
             {