After putting some bits on it & going over the rig with a fine eye, I'm pleased with the fit,finish & especially ergo. I had planned to mount my warne 11mm cz rail adaptor & use a specific 1 piece mount but when I removed factory rail quickly realized it's not a 11mm rail on the ghost . It more a 3/8 rail with 45 degrees vs 11mm & 60 degrees. My ring centerline from top of of dovetail is 1" 3/4 as it is with the factory 1913/dovetail mount which puts me good for eyebox. What suprised me was when I flipped that factory rail over to measure is the quality of maching on it,. It realy is quite good & BRK could have easily cheaped out on it by not giving us a complete contact all the way to bottom of dovetail rail. I'll just use low .9 " rings for now as eye box is perfect & maybe revisit using a 1 piece ring mount. . I also like the fact you can grab the rig just behind the scope & carry off with it. Same place I grab my uragan. Got some new bits coming for compressor so well see how it shoots soon enough. I'll start with jsb .44s.