Is a Marauder as accurate as a Steyr? From the factory, no. With an almost complete retrofit of everything but the air tube, perhaps close. But by the time you have replaced all of those elements (FT stock, hammer, spring, valve, transfer port, trigger upgrade, Match barrel, Huma Regulator, etc), you have more than tripled the cost of the Marauder. Don't get me wrong, I like the Marauder (I own one). And yes, it is a repeatable sub-MOA rifle (with the copious modifications done to it), but in it's current trim it is way over the max allowed 20 FPE as well. This brings up the second area of the challenge, which is being accurate at a low FPE figure..... which adds to the equation.