RL556v3 80% AR15 Lower – Flat Dark Earth | Polymer80
Specs at a glance
About this product
The Polymer80 RL556v3 is an 80% AR-15 lower receiver in Flat Dark Earth, designed for builders who want a lightweight, durable foundation for their rifle. This lower requires machining to complete, offering a project for enthusiasts. It has become one of our steady sellers since we started stocking it. Weighing just 2.6 oz on our scale, it’s built from reinforced polymer for reliable performance.
Key Highlights
- Made from reinforced polymer for strength and impact resistance.
- Flat Dark Earth finish for a modern tactical appearance.
- Compatible with standard AR-15 parts kits and uppers.
- Includes jig and drill bits for the completion process.
- Lightweight design reduces overall rifle weight.
Product Details
| Model | RL556v3 |
| Type | 80% Lower Receiver |
| Caliber | Multi (5.56/.223) |
| Material | Reinforced Polymer |
| Finish | Flat Dark Earth |
| Weight (measured) | 2.6 oz |
| Includes | Jig, Drill Bits |
| Fire Control Pocket | Requires Machining |
What Buyers Ask
What tools are needed to complete this 80% lower?
You will need a drill press or router, a vise, and standard drill bits. The included jig guides the machining process for the fire control group pocket and trigger pin holes. Basic mechanical skill is required.
Is there a break-in period for a polymer lower?
Our staff recommends firing approximately 50 rounds to ensure smooth operation of all moving parts before relying on the firearm for any serious use. This allows the components to seat properly.
Does this work with all AR-15 upper receivers?
Yes, the RL556v3 is designed to be compatible with mil-spec AR-15 upper receivers. Ensure your upper receiver is within standard specifications for a proper fit.
✅ Ships same business day before 3 PM
✅ No logos or product names on package
✅ Full refund within 30 days
✅ Secure payment processing
What's in the box
- RL556v3 80% AR15 Lower – Flat Dark Earth | Polymer80