XLR is one of the top chassis being used in NRL and PRS, our Pro shooter was sponsored by them and won national matches with them as well as others. My rig was kind of built around more of a NRL Hunterish build though I'd make some changes now that I know more of what's involved.
https://cstactical.com/shop-by-brand/xlr-industries/
Dan and some of our customers in NRL Hunter both light and heavy
And my build in the beginning before I changed to the XLR Envy Pro