I went from RTS2 to DPP to Holosun. The Holosun was most forgiving for SHO/WHO shooting by far but don’t have enough time on the XL yet to say how it will be in comparison. But on the chaos with the Holosun I had brass marks on the back of the site housing and with the Romeo there is nothing so that little bit of extra clearance was all it needed. Extra insurance. Sent from my iPhone using Tapatalk