My gun builder fabricated it.You can order these with Arca. I use one on my 375. It’s solid.
Who sells that Arca rail you installed?
ORDER HERE The HD-50 was designed for the 50 BMG caliber platforms. This is our Heavy Duty and most robust bipod. The arm lock lugs are larger to withstand the heavy recoil of a 50 BMG. This bipod has the ability to cant and has a very sturdy throw lever. The lever allows you to adjust the...www.accu-tac.com
What is the diameter of your barrel? One of my ELR rifles has a 1.45 barrel and 40 MOA rail and no issues with Elite Iron.