Description
Polymer80 LR-308 80% Lower Receiver
The Polymer80 LR-308 80% Lower Receiver (Receiver Only) is the exact same forged 7075-T6 .308 lower used in our complete jig kits — now sold by itself for builders who already own a .308 jig or simply want the absolute best big-bore blank money can buy.
Every LR-308 lower features:
- Forged 7075-T6 aerospace aluminum (40% stronger than 6061)
- DPMS Gen 1 high-profile pattern (works with Aero M5, DPMS, PA-10, etc.)
- Deep laser-engraved FIRE / SAFE markings that survive thick Cerakote
- Fully broached magwell for SR-25 / Magpul PMAG LR-20 magazines
- Threaded bolt catch pin hole (1/4-28 – no roll pin ever)
- Integrated oversized trigger guard
- Pre-drilled takedown/pivot holes & correct 1-3/16″-16 buffer thread
- Available raw (perfect for custom Cerakote) or Type III hardcoat black
No jig, no tooling — just the legendary Polymer80 .308 lower at the lowest standalone price ever offered. In stock and shipping same-day discreetly from Polymer80 USA.
Why Serious .308 Builders Choose the P80 LR-308 Lower Only
| Feature | P80 LR-308 Lower Only | Typical .308 80% Lower |
|---|---|---|
| Material | Forged 7075-T6 | Often 6061 billet or cast |
| Bolt Catch | Threaded 1/4-28 | Roll pin |
| Magwell | Broached & flared | Sometimes raw |
| Engraving Depth | Deep laser – survives Cerakote | Often shallow |
| Pattern | True DPMS Gen 1 high-profile | Mixed or unknown |
Complete 2025 Specifications
| Specification | Detail |
|---|---|
| Material | Forged 7075-T6 Aluminum |
| Pattern | DPMS Gen 1 (.308 / 6.5 Creedmoor) |
| Weight (unfinished) | 13.8 oz |
| Finish Options | Raw (Cerakote-ready) or Type III Black Anodized |
| Safety Markings | Deep Laser Engraved FIRE / SAFE |
| Magwell | Broached for SR-25 / PMAG LR-20 |
| Bolt Catch | Threaded 1/4-28 (no roll pin) |
| Trigger Guard | Integrated oversized |
| Buffer Thread | 1-3/16″ × 16 TPI |
| Recommended Jigs | P80 .308 jig, 80% Arms .308, 5D Tactical .308 |
| Made In | United States |
Perfect For
- Builders who already own a .308-specific jig
- Custom Cerakote or anodizing projects
- 6.5 Creedmoor precision builds
- Anyone who refuses to settle for 6061 or cast lowers
Real 2025 Customer Reviews “Bought three raw lowers — sent straight to Cerakote. Threaded bolt catch + deep markings still perfect after coating.” – Ryan M., Texas “Already had the .308 jig, so this price is unbeatable. Fit my Aero M5 upper with zero slop.” – Sarah K., Colorado “6.5 Creedmoor build came out sub-MOA. Forged 7075 makes a real difference on a big-bore rifle.” – Chris T., Wyoming
Frequently Asked Questions – LR-308 Lower Only
Q: DPMS Gen 1 or Armalite pattern? A: 100% DPMS Gen 1 high-profile (most common .308 pattern).
Q: Will the markings disappear under Cerakote? A: No — laser depth survives 0.004″+ of coating.
Q: Can I buy the matching .308 jig separately? A: Yes — dedicated LR-308 jig kits available.
These Sell Out Faster Than Complete Kits Standalone LR-308 lowers disappear within hours of every drop.
Grab your Polymer80 LR-308 80% Lower Receiver ONLY now — the strongest, most accurate .308 blank available — before the batch is gone.
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