I have a KAC M5 RAS I want to use and really don’t see the point of a 20" rifle anymore unless I step up to something like 6.5. Everybody preaches free float but in the real world would a decent Grendel upper with a M5 and Bipod be accurate enough to be a hunting rifle? 2 legged critters really only need minute of bad guy so I’m not worried there, just clean shots on white tails out to 300ish.
I avoid running bipods on non FF rails. White tails at 300 is obviously doable either way but you’re going to need to figure out how different holds / contact points (IE, Bipod, hand supported behind the bipod) affect POI. This goes for all rifles, but the non FF rail will exacerbate the issue.