ARMALITE AR-10 B SERIES COMPLETE UPPER RECEIVER for Sale
Browse Armalite AR-10 B series complete upper receiver listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The Armalite AR-10 B series upper receivers trace their roots to Eugene Stoner's original AR-10 platform. Designed for long-range precision and .308 Winchester firepower, these complete uppers provide strength, modularity, and accuracy. They're favored in the AR-10 market for build versatility and Armalite heritage.
Why It's a Top Choice
- Compatible with Armalite AR-10 B series lowers
- Ideal for precision .308 or 6.5 Creedmoor builds
- Forged for strength, rigidity, and heat resistance
- Factory-assembled with barrel, BCG, and gas system
- Trusted by hunters and long-range shooters alike
Key Variants
Armalite AR-10 B Complete Upper 20 Inch
Suited for long-range enthusiasts seeking maximum velocity and reach.
Armalite AR-10 B Complete Upper 16 Inch
Great for hunters or users needing a more compact .308 configuration.
Armalite AR-10 B Upper 6.5 Creedmoor
Optimized for superior long-range ballistics in precision rifle setups.
Competitor Comparison Table
| Feature | Armalite AR-10 B Upper | DPMS LR-308 Upper | Aero Precision M5 Upper |
|---|---|---|---|
| MSRP | $800–$1,000 | $500–$850 | $450–$900 |
| Capacity/Size | .308/6.5C, 16–20 in barrels | Similar calibers and lengths | Wide selection of barrel types |
| Weight | 4–5 lbs (unloaded) | 3.5–5 lbs | 3.8–4.8 lbs |
| Optics-Ready | Yes, flat-top rail | Yes | Yes |
| Trigger Type | Lower dependent | Lower dependent | Lower dependent |
| Notable Pro | True Armalite pattern fit | Widespread parts compatibility | High modularity and finish options |
| Notable Con | Limited to Armalite lowers | Slight fitment differences across brands | No forward assist in some models |
Best Use Cases
- Precision shooting
- Hunting medium and large game
- Custom AR-10 builds
- Long-range range time
- Firearms collections with Armalite legacy
FAQs
Can I use an Armalite AR-10 B upper on a DPMS lower?
No, the AR-10 B series uses a proprietary upper/lower interface and is not DPMS-compatible.
What is included with a complete Armalite AR-10 B upper?
Typically includes the barrel, handguard, bolt carrier group, charging handle, and gas system.
How does the Armalite AR-10 B pattern differ from DPMS LR-308?
The B pattern has unique takedown pin spacing and parts geometry, requiring matched B-series lowers.
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