I used Harris ( even with Larue mount and Pod Loc etc ) for years
Bought a GG&G ( not bad ) for my ARs but don't like it for bolt gun. Overpriced for what it is
Bought a Sako for my Sako TRG....completely overpriced for what it is
So, when it came time to buy bipod for my AI AEMkII was looking at the Parker Hale ( Versa Pod is a cheap knock off of PH ) so I can make use of spigot
I spoke to Stacey Blankenship at Accuracy International ( US importer ) and told me for a military field use the PH is a good choice, but it is a bit floppy for bench use. The first thing I though of was my Sako bipod ( great field bipod , but since its free to cant not good for bench shooting ). Don't want to make a $500 mistake again. Stacy suggested a Atlas Bipod which is less expensive than the PH
Long story short, I put a Atlas with quick release rail clamp to adapt on my AI Spigot
Since your AX chassis does not have a AI spigot, you should use the rail section and buy Atlas with BT10-LW17 with a American Defense quick release, or go with a BT-10 NC ( no clamp ) and buy a Larue 271 quick release
Since I bought the Atlas, I do no tuse my Harris ( unless its mouting to a sling stud )
By the time you pimp out a Harris with pod loc and a proper picatinny clamp ( ie the Larue Harris hybrid...they want $200 ) its the same $$ as a Atlas. When you consider its about the same, there is no compelling reason to buy the Harris
I also use the Atlas on my TRG42 ( I have a picatinny section on the rail slot of the forend ). My Sako bipod just gathers dust now