Springfield M1A receivers are made from investment cast AISI 8620 alloy steel. Not aware of any systemic quality issues. I think Chinese casting with insufficient QA is the issue.
The real issue is that we know the forged guns are 8620 from actual testing. The 2016+ cast receivers haven't been tested. We don't yet know what they are made of, how they were heat treated, or how they will hold up. also, they leave a lot of surfaces as-cast so they are little on the ugly side.




















































