11-08-2018, 02:02 PM
One nice thing about the PSA 12” 6.5 Grendel upper is it comes with an adjustable gas block. When I first shot mine I was using the EPT trigger which really affected my ability to shoot it accurately. I put a RRA NM trigger in my 12” build and the groups improved a bunch. I mounted a Vortex Strike Eagle 1-6 on mine and the cross hair on the reticle is to thick for accurate shooting at 50 yards. I like the M-Lok hand guard PSA is using and the 6.5 Grendel BCG was in spec. Overall I really like my 12” PSA build.