The .308 80% Lower – Billet is a precision-machined 7075-T6 aluminum receiver blank for building a DPMS-pattern AR-10. This billet construction provides superior material integrity and a solid foundation for a .308/7.62x51mm rifle. It arrives unfinished with a raw, anodized-ready surface, requiring final machining and assembly by the builder.
Key Features
- 7075-T6 Aircraft-Grade Aluminum Billet – Higher strength-to-weight ratio than forged lowers.
- DPMS Gen1 Pattern – Compatible with the most common .308 AR parts on the market.
- Raw, Unfinished Anodizing – Allows for custom cerakote or type III hardcoat anodizing after machining.
- Reinforced Pivot and Takedown Pin Areas – Engineered for durability under .308 recoil forces.
- Flared Magwell Design – Facilitates faster, more reliable magazine insertion.
Specifications
| Caliber / Type | .308 Winchester / 7.62x51mm NATO (AR-10 Platform) |
|---|---|
| Material | 7075-T6 Aluminum Billet |
| Finish | Raw (Unfinished, Anodizing Required) |
| Compatibility | DPMS Gen1 Pattern Parts Kits & Uppers |
| Weight | Approx. 1.2 lbs (pre-machined) |
Billet construction offers greater dimensional consistency and allows for more intricate design features than forging. This lower is the correct starting point for a precision-oriented or heavy-use .308 build where a rigid receiver is critical for maintaining zero and managing recoil. As an 80% receiver, it is not a firearm and is legal to purchase in most states, but builders must comply with all federal and local laws.
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