I jumped on a PSA complete upper in .224 Valkyrie a while back and I'm not exactly ecstatic with the results. It's on a Rock River lower with a good trigger and I've been shooting it off a Magpul M-Lok bipod. The bipod definitely has to go. If this thing doesn't come around shooting off bags, I'll have to exercise other options. I am considering switching barrels to either a quality barrel (I don't know the source of the PSA barrel) or another caliber. A Krieger Valkyrie barrel from White Oak Armament is going to cost twice what I paid for the complete upper. WOA's "standard" barrel is $230 less than the Krieger. Either of those options may be throwing good money after bad. The BCG and magazine are both the same as 6.8 SPC so that's a possibility but I'm wondering what other caliber options are out there. Bearing in mind that we are target/bench/prairie dog shooters, what do you think?