I sent my barreled receiver in to Kreiger for one of their stainless steel medium weight DMR barrels. While they were installing the barrel I had them unitize the gas cylinder and line everything up. (My M1Aicon already has an excellent 4.75 lb. trigger.)

After carefully following Kreiger's break in procedure to the letter, I moved all of my equipment over to the 200 yard line. I slung up lying prone on my mat and fired. The first three bullets were touching in the X ring on a standard SR target! The rifle fired a 98-6X the first time out and continues to be scary accurate all the way to 1000 yards using 175 gr. SMK's. I highly recomend Kreiger barrels as well as Kreiger's installation.