I think by now that the info on bipods in LL's new book are beginning to circulate among those of us who aren't deeply immersed in the competition circuit
I agree that the Harris, while a long trusted legacy, is approaching obsolescence. I have used the Harris for decades, both tilt lock and non-tilt versions; and I much prefer the non-tilt because it's not going to unlock on me. Unfortunately the mounting itself tends to loosen up way too easily; and getting it properly realigned with the stock axis can be troublesome. That's something I have experienced repeatedly, occasionally during an already stressful situation.
I value economy , and also USA sourcing; with UTG Leapers currently offering what I consider a useful
Recon-Flex Bipod line that incorporates M-Lok mounting, and an utterly rigid support, adjustable for tilt on a gross scale via notched legs.
Currently below $50, it's not an expensive experiment.
It has five positively locked positions, two for stowage fore or aft; and three more for deployment, vertical and 45 degrees fore or aft. It's rigid in all positions. When stowed, the bottom of handguard is unencumbered; allowing rest, bag, or ruck support. The stowed position allows the forend to provide a far broader and more steady hand grip.
I have the long and the short version and am setting up to get out and test them once the local quarantines are lifted (actually, I tested one already on my PA-10 308, but only ten rounds to verify function with IMI 168 Razor Point. The bipod demonstrated no flex at all, which I suspect could simplify or completely eliminate bipod preload).
I have already encountered one Con, the folded bipod leg may interfere with pop-up ABUIS mounting and stowage. I may need to reposition the ABUIS or the bipod mounting, or both. Testing will tell. (ETA - Reworked the mounting, and the problem was easily resolved).
When shooting from the bench, there is no tilt issue as long as the bench is level and the scope is set up with the reticle level. You open the bipod, emplace the rifle; and you're GTG.
Greg