07-07-2020, 02:28 AM
My broken extractor was due to an over gassed 16 carbine length gas 6.5 Grendel. I watched which ammo I shot in this upper till I finally fixed the issue with an adjustable gas key from Rubber City Armory. A Friend also had an extractor fail with an over gassed 18 Satern/Liberty mid length gas system SS barrel from Brownells. My Friend installed an adjustable gas block which resolved his issue.

