undeadchew dxscxnd98 I think the PSA upper will fit, I haven't printed the new SL308 yet to test but when I look at the geometry in cad and compare to the older printed 308 lower there seems to be enough clearance.
hoffmantactical PSA LR-308 gear has some small differences from the LR-308 spec. I would stick with KAK or Aero equipment. KAK LR-308 bolts are the best, and not that pricey.
hoffmantactical undeadchew The bolt catch geometry is a little different, but I have don't know to what degree.
