RAW Bi-Pod Rail Question?

Hi Guys,

Just got a RAW bi-pod rail for a new gun stock. Wondering what bi-pod adapting insert is needed to actually attach the bi-pod? The RAW bi-pod rail has a female slot as do most bi-pods and hence a connecting bar must be secured in-between.

RAW Bi-Pod Rail.1649612195.JPG


https://www.amazon.com/UTG-TL-BP03-Center-Height-Picatinny/dp/B08BXZXRV3/ref=sr_1_2?crid=6TH6J3OE3GJ3&keywords=utg+bipod+recon&qid=1649611828&sprefix=utg+bipod+r%2Caps%2C95&sr=8-2