I bought an MCX and 805 both for their folding stock capabilities. Unfortunately, any conversion barrels seem to be MIA with the generational changes for the 805, and to some extent the MCX (I have a pre virtus).
With the 805, the 11.5” 5.56 barrel is too long to fit in most regular backpacks. If I remember correctly it is around 23” folded. Also with the design of the upper, you cannot make the barrel any shorter. Maybe the gen 2 will have more support/modularity. Other than that, the 805 is a nice rifle.