Polymer80 RL556V3 – RHINO 80% AR15 Lower Receiver ONLY
polymer AR-15 80% lower
The RHINO RL556v3 80% Lower (Receiver Only) is the exact same forged 7075-T6 blank used in our famous jig kits — now sold by itself for builders who already own an Easy Jig Gen 3 or simply want the absolute best AR-15 lower at the lowest standalone price ever offered.
Every RHINO lower features: | polymer AR-15 80% lower
- Forged 7075-T6 aerospace aluminum (30–40% stronger than 6061)
- Threaded bolt catch pin hole (1/4-28 – no roll pin ever)
- Fully broached & slightly flared magwell
- Deep laser-engraved FIRE / SAFE markings that survive thick Cerakote
- Integrated oversized trigger guard
- Available in Type III black anodized or raw (perfect for custom Cerakote)
No jig, no tooling — just the legendary RHINO lower at the cheapest it has ever been. In stock and shipping same-day discreetly from Polymer80 USA.
Why Builders Buy the RHINO Lower Only in 2025 | polymer AR-15 80% lower
| Feature | P80 RHINO RL556v3 Only | Typical 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 |
| Price (lower only) | Lowest ever | Usually higher |
Complete 2025 Specifications | polymer AR-15 80% lower
| Specification | Detail |
|---|---|
| Material | Forged 7075-T6 Aluminum |
| Pattern | Mil-Spec AR-15 |
| Weight (unfinished) | 8.4 oz |
| Finish Options | Raw (Cerakote-ready) or Type III Black Anodized |
| Safety Markings | Deep Laser Engraved FIRE / SAFE |
| Magwell | Fully Broached & Flared |
| Bolt Catch | Threaded 1/4-28 (no roll pin) |
| Buffer Thread | 1-3/16″ × 16 TPI mil-spec |
| Trigger Guard | Integrated oversized |
| Recommended Jigs | Easy Jig Gen 3, 5D Tactical, Modulus Arms |
| Made In | United States |
Real 2025 Customer Reviews “Bought six raw RHINOs — sent straight to Cerakote. Threaded bolt catch + deep markings still perfect after coating.” – Mike R., Texas “Already had the jig, so this price is insane. Fit my Aero upper with zero wobble.” – Sarah K., Arizona “Forged 7075 with threaded bolt catch for under $100 shipped? I just ordered ten.” – Chris T., Florida
Frequently Asked Questions – RHINO Lower Only Q: Is this the same lower as in the jig kits? A: 100% identical — same forging run, same QC.
Q: Will the markings disappear under Cerakote? A: No — laser depth survives 0.004″+ of coating.
Q: Serialized? A: No — legally a non-firearm until you finish it.
These Move Faster Than Complete Kits Standalone RHINO lowers routinely sell out in under 12 hours — especially raw.
Grab your Polymer80 RHINO RL556v3 80% AR-15 Lower Receiver ONLY now — the strongest, cleanest blank lower at the lowest price ever — before the batch is gone.
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