The thing I would advise is don’t waste a lot of money on a mount.
Remember the mount does not need to be a precisely machined piece of metal.
It is not a functioning moving part. I have seen these mounts for 100.00 plus.
To me that is a ridicules amount of money.
The Bipod will have movement even if you mounted it on a 1000 pound piece of steel.
The following picture is my $30 mount for my carbine. It fit good and tight on my rail.
I have two Harris Series 1A2 Model LM Bipods. Legs out stand off the hand guard just over 81/2 inches. Legs fully extended are 13 inches off the hand guard. I have found this to be perfect for all known positions.
Hope this helps you out.
Edit to add: I bought it from a gun show and do not know the maker. The dealer carries a lot of RRA parts and pieces if that helps.