Priest 2 bipod rail

Hello I use the following and find it to be very solid and only a 1/2 gap between metal bottle and rail. UTG 1/2 in riser # RS05S3 ($8) and a Yanked Hill Machine YHM-9473 ($45) can usually find on Amazon or Ebay hope this helps Eric

So how do you fill your rifle? Isn’t the rail extension blocking access to the fill fitting? Oops I was thinking of the Prophet where the fitting is on the bottom. I forgot that the Priest’s fitting is on the side.