Personal preference I suppose. Yes, the standard Sig charging handle for the MCX Virtus is actually a nice CH. But some think that the Geissele version is just a bit nicer, with easier to grasp handles and a better overall feel. I am one of those folks. Three MCX Virtus rifles, three Geissele charging handles. For those interested, I have also used the Radian LT charging handle made for the MCX Virtus. I prefer the Geissele.