I put another 100 rounds through the PSA/SPIKES Dissipator. Everything fed; everything fired; and everything ejected. I only shot out to 50yds, but the bullets went where they were aimed. Twenty-round strings were all one-holers. I am extremely happy with the upper assembly PSA sent me. It was more than $100 less than other name-brands, and as far as I can tell, the quality and accuracy is excellent and as good as any other brand I have owned. Next trip will incorporate 100 yards, though I can anticipate any problems will be attributed to the shooter and not the rifle.