I am down the rabbit hole on my 10.5 SBR build when it comes to the barrel. I will spare everyone the details but one of the options I came across was a 10.3 Colt surplus barrel with the FSP. It is a cut down 14.5 model. Price is decent so I am seriously considering it (even if I do have to open up the port a bit to get it to cycle a wider range of ammo.) It is most definitely going to have a dedicated can. My one fear is with thread concentricity not knowing who did the chop. Anyone have any feedback/experience on this topic?