https://kahntrol.com/podmodadapters/ vs https://www.coreshooting.com/products/harris-bipod-adapters is there a difference other than cost? PodMod gets you the adapter for $30. PASS adapter $44. Both seem to do the same thing.
The Kahntrol adapters work well with a Harris and the company has solid customer service. Downside is by the time you pimp out a Harris to do what you want you might be money and effort ahead just buying a bipod that does it out of the box.