These lower receivers were manufactured for us under a variance by Sun Devil Manufacturing. Sun Devil uses 6061 aluminum alloy billet, which is finished in stain black hard anodize.
We now machine our own receivers, so we’re blowing out these Legacy receiver sets at discount price. The upper in this set was machined (from 7075 billet) in house by Lone Star Armory to match the Sun Devil lower receiver.
Receiver set is LR-308 compatible and the upper rail is LR-308 “Low’ or “A3” type.