Tried several different guns and none of them functioned properly. Spent several weeks deliberating with Sam about what went wrong. Never figured it out. My reloads with lower muzzle velocity cycled just fine. Closest we got to a conclusion was that the BHA brass was too long and gas was leaking in the chamber, after talking about that Sam never got back to me. Most of the problems in the three ARs I tested were odd and hard to correlate. The guns that managed to cycle did not lock open fully on the last round and frequently had failures to feed. At this point I am just cutting my losses and moving on.

Very clean shooting. Shot 10 five shot groups through 18 inch mid-length 1/8 twist averaging 1/2 inch to 3/4 inch groups at 100 meters. Will definitely buy again.

loads well. No mis fires. I am getting spoiled.