02-14-2015, 03:56 PM
I haven't owned a UBR but I have played with them some. I have a PRS on a 18" grendel and love it for bench and field shooting where walking isn't going to be done. I love the fit and feel of the PRS, the adjustments are great and I get the length of pull and check weld I want for scope height. The UBR is well built but just doesnt have the adjustment the PRS has. Just my 2cents