I have recently purchased a psa ar 10 MOE EPT SBA4. My ? Is what upper do i put with it? Is it a pistol? Or a rifle? I am getting into building ar platform rifles. And wanted a 10 to go with my 15 grendel.
Yep. I built an LR308 early this year. The lower and upper receivers came together. Then I added a barrel and all the other parts to match the upper and lower. AR10 and LR308 parts aren't usually compatible.If you bought an AR-10 Lower from PSA, the PSA AR-10’s are likely proprietary to PSA. AR10’s are not built to Milspec, so it’s best to stick with the same MFG, when it comes to lower and upper receivers.