Aero Precision M4E1 Threaded No FA Complete Upper 16" 5.56 Mid 15" M-LOK ATLAS S-ONE - Anodized Black

Built for Precision, Durability, and Maximum Customization

The Aero Precision M4E1 Threaded No FA Complete Upper with a 16-inch barrel delivers a high-performance solution for AR-15 enthusiasts. Designed without a forward assist, this mid-length upper provides a streamlined and weight-optimized profile while retaining the rugged dependability of Aero Precision's enhanced forged construction. Paired with the lightweight 15-inch M-LOK ATLAS S-ONE Handguard, this upper receiver maximizes attachment flexibility and offers a refined, precision-driven AR-15 setup perfect for custom builds. Note: Bolt Carrier Group (BCG) and Charging Handle are not included.

Key Features:

• No Forward Assist Design: Simplified, lightweight build ideal for streamlined performance.
• Enhanced Forging: Custom-enhanced forging for a billet-style look while maintaining forged strength.
• 15-inch ATLAS S-ONE Handguard: Features M-LOK attachment points, front and rear Picatinny rails, and an eliminated center top rail for weight reduction.
• Quick Disconnect Sling Sockets: Positioned at 3, 6, and 9 o'clock for versatile carry options.
• M4 Feedramps and Full-Length Picatinny Rail: Seamlessly blends with ATLAS Series Handguards for a consistent and sleek top rail.
• A2 Flash Hider Included: Reduces flash signature for improved performance.

Technical Specifications:

• Manufacturer: Aero Precision
• Caliber: .223 Remington / 5.56x45mm NATO
• Barrel Length: 16 inches
• Gas System Length: Mid-Length
• Barrel Twist Rate: 1-7
• Material: 4150 Chrome Moly Vanadium (Barrel)
• Attachment/Mount Types: M-LOK, Picatinny
• Gas Block Journal Size: .750 inches
• Handguard Length: 15 inches
• Inside Diameter: 1.3 inches
• Outside Diameter: 1.5 inches
• Condition: New
• Bolt Carrier Group: Not included
• Charging Handle: Not included

Perfect for mid-length AR-15 builds, this complete upper offers superior balance, customizable attachment options, and enhanced accuracy for tactical, competition, or general-purpose shooting.

Customer Benefits:

• Superior Customization: Extensive M-LOK and Picatinny compatibility to support attachments for different mission needs.
• Balanced Handling: Mid-length gas system offers smoother recoil impulse and improved shooting comfort.
• Enhanced Durability: Robust construction and high-grade materials provide long-lasting performance in demanding conditions.

Experience top-tier performance and versatility with the Aero Precision M4E1 16" Upper. Perfect your custom build—add it to your cart today!