I finally took my DSA-built STG58 to the range for the first time. I had it built with their standard muzzle brake instead of the stoli-copy brake at no extra charge. Armed with 100 rounds of Hirt 7.62, I trekked out to my club’s 100 yard range. I set the gas regulator to 7, loaded one round in the mag, set down the light military bi-pod, and I fired off the round. The bolt stayed opened with the gas regular set on 7. I verified this setting several times and there was no evidence of short recoils So I set it to 6.5 just to be sure and started shooting for groups. Using a Navy Hold on the target, I was consistently shooting 1.5 to 2" groups. One measured just under an 1"! Granted I was using the bi-pod, but I was impressed. Recoil was mild. I allowed the barrel to cool a bit every ten round as I checked my target. The rifle performed flawlessly throughout the 100 round trial. My only complaint is the metal hand-guard does heat up. The DSA STG-58 is a great buy and comes with a Koplin case, 1-20 round austrian magazine and lifetime warranty.