Description
Engineered for shooters who demand maximum stopping power in a compact platform, this AR-10 .308 complete upper receiver delivers exceptional performance, reliability, and durability in every shot.
At the core is a 12.5” heavy profile .308 barrel, designed to maintain rigidity under heat and provide consistent accuracy during sustained fire. Paired with a precision-tuned adjustable gas block, this upper allows you to fine-tune cycling for smoother recoil impulse and optimal suppressed or unsuppressed performance.
The Atlas R-One M5 handguard provides a lightweight, free-float platform that enhances accuracy while offering modularity for attachments. Included are four black Picatinny rail sections, giving you the flexibility to mount optics, lights, and accessories exactly where you need them.
This upper comes fully equipped with a Nickel Boron bolt carrier group (BCG) for enhanced durability and easy cleaning, along with an ambidextrous charging handle for fast, intuitive manipulation from either side.
Finished in a rugged Graphite Black Cerakote, this upper is built to withstand harsh environments while maintaining a sleek, professional appearance.
⚙️ Technical Specifications
- Platform: AR-10 / .308
- Barrel Length: 12.5”
- Barrel Profile: Heavy Barrel
- Finish: Graphite Black Cerakote
- Handguard: Atlas R-One M5 Free-Float
- Gas System: Tuned Adjustable Gas Block
- Bolt Carrier Group: Nickel Boron (NiB)
- Charging Handle: Ambidextrous
- Muzzle Device: Zombie Muzzle
- Accessory Mounting: 4 Included Black Picatinny Rails
- Hand Stop: Included
- Upper Type: Complete (Ready to Install)
🎨 Custom Upgrade Options
Customize your build directly from the product page:
- ✅ Gold Cerakote Accent Package (Optional)
Add premium gold Cerakote finishes to select components and rail sections
(Selectable via checkbox before checkout)
🎯 Performance Benefits
- Compact .308 Power – Ideal for close-to-mid range applications
- Reduced Recoil & Tunability – Adjustable gas system for smoother shooting
- Enhanced Durability – Cerakote + Nickel Boron internals
- Modular Setup – Rail sections + M5 handguard flexibility
- Ready-to-Run – Fully assembled with premium components
📦 What’s Included
- Complete AR-10 .308 Upper Receiver Assembly
- Nickel Boron BCG
- Ambidextrous Charging Handle
- Tuned Adjustable Gas Block (Installed)
- Zombie Muzzle Device (Installed)
- Hand Stop
- (4) Black Picatinny Rail Sections
