Centurion Arms LLC, C4 5.56 Forged Receiver Set 7075-T6 Aircraft Grade Aluminum
Receivers Machined from Aluminum Forgings 7075-T6
Receivers Hardcoat Anodized per MIL-A-8625F, Type III, Class 2
Absolutely gorgeous ano. Tolerances that are as tight as you'd ever want. On top of an amazing company run by genuinely great people. You can't go wrong with centurion. I would and have purchased again.