+1 for Roberts ARs he makes some pimped out ARs for sure.
This upper comes with a 1/2 MOA Guarantee Rainier Arms, LLC™ | Browse | Rainier Arms UltraMatch Series | Rainier Arms UltraMatch Upper - SPR 18.5
They are using Shilen barrels to.
That kind of accuracy out of a semi auto is pretty good.
I think the GAP Ars come with a 1/2 MOA guarantee to.
oddly enough it seems some of the regular factory guns that shot well sub MOA are coming from DPMS and bushmaster in there heavy barrel guns.