My mate makes and fits a very good mono pod for a trg22 .It looks the dogs danglesdochoc,
I have used Harris bipods forever and like them a lot - on my other rifles. The cost of the TRG bipod is insane, but I forgot about the $$$ long ago. Fact is, it works a treat. Low C of G, pivots horizontally and for cant, feet work on different surfaces, positive & easy leg adjustments. Sako designed the bipod to enhance the TRGs, and it does.