6.5 mm Grendel Build
1Recently finished building and testing my second AR build. 6.5 mm Grendel. I had a problem with technician error. It seems that I mixed up the disconnector spring with the bolt catch spring. Of course initial testing resulted in failure of the trigger mechanism. The feed mechanism worked fine however after firing the first round the trigger wouldn't reset. My first thought was short cycling but subsequent rounds fed perfectly. A discussion with a tech from my parts vendor proved fruitful. He suggested examining the trigger mechanism and I discovered the problem. Replacing the wrong spring with the correct disconnector spring resulted in perfect operation.