# Radian AX556 Precision AR-15 Lower - FDE 5.56/.223 Billet

**Brand:** Radian Weapons
**Category:** Parts
**Caliber:** 5.56 NATO

## Specifications

- **Caliber:** 5.56 NATO
- **UPC:** 817093023713
- **SKU:** UCENtP3ZJ

## Description

The Radian Weapons AX556 Stripped Billet Lower is a 7075-T6 aluminum lower receiver for the AR-15 platform, chambered for 5.56 NATO / .223 Remington. The Flat Dark Earth Cerakote finish is corrosion-resistant and holds color well under regular use.

### Key Specifications
- **Brand:** Radian Weapons
- **Model:** AX556 Stripped Billet Lower
- **Category:** Lowers
- **Caliber:** 5.56 NATO / .223 Remington
- **Construction:** 7075-T6 Aluminum
- **Finish:** Cerakote in Flat Dark Earth color
- **Trigger Guard:** Integral design
- **Magazine Well:** Flared for easier magazine insertion
- **Safety Selector:** Ambidextrous Radian Talon 45/90 selectors (long/short)
- **Tensioner System:** Self-adjusting receiver tensioner (SART)
- **Takedown Pins:** Enhanced takedown pin set included
- **Compatibility:** AR-15 platform

The SART system removes upper-to-lower play without manual adjustment, which addresses one of the more common annoyances in custom AR builds. The ambidextrous Talon selectors work at both 45 and 90 degrees and can be run from either side. The flared mag well speeds reloads noticeably compared to a standard lower. This is a stripped lower, so you'll still need to source a lower parts kit and stock separately.

## What Customers Say

*AI-generated insights from customer reviews*

Users generally have a lot to say about the billet construction. The machining quality is visible and the tolerances are tight, which shows up in how the upper and lower fit together. The ambidextrous controls and SART system get consistent praise from both lefties and right-handed shooters who wanted a cleaner fit.

The FDE Cerakote finish draws positive comments for looks and durability, and most builders find it pairs well with a range of other FDE or dark earth components. Compatibility with upper receivers and accessories is broad, which makes it a versatile base for custom builds.

Price is the main sticking point. The AX556 costs more than most stripped lowers, and some buyers question whether the SART and ambi selectors alone justify the premium over a forged lower. People who've shot both usually land on yes, but it's a real consideration for budget-focused builds. Customer service experiences with Radian vary, though most interactions seem straightforward.

## Pricing

**3 offers available**

| Vendor | Price |
|--------|-------|
| Impactguns Com | $514.95 |
| Grabagun Com | $514.95 |
| Deguns | $517.99 |

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*Data from [GunsNation](https://gunsnation.com)*