Gentlemen:

Can anyone direct me to a source of information for claw mounts? Typical price range(s), installation, etc.

Thanks

Try:

http://www.newenglandcustomgun.com/

Here is another source. www.recknagel.com
New England Custom gun sells Recknagel. Buying the parts will be the cheapest part of your adventure. The parts will probably cost about $500.00 The installation depending on the application about $1500.00 to $2500.00 Spend some time to find a experienced gunsmith, a simple mistake fitting the parts and all you have is junk. NECG can also do the installation for you.

Recknagel http://www.recknagel.de/produkteenglisch.htm

EAW
http://www.eaw.de/eaw/index_uk.php/

MAK
http://kilic.hk-kundenzugang.de/

I believe all have U.S. distributors.

An interesting thread:
https://forums.accuratereloading.com/eve/forums/a/tpc/f/9411043/m/984105976