Geissele Automatics Super Duty AR-15 Barreled Upper Receiver 5.56 Carbine - Black - No Muzzle Device - 11.5" - 08-245B

Geissele Automatics Super Duty AR-15 Barreled Upper Receiver 5.56 Carbine – Black – No Muzzle Device – 11.5″

Elevate your AR-15 build with the Geissele Automatics Super Duty 11.5-inch Barreled Upper Receiver, engineered for unmatched reliability and precision in demanding tactical scenarios. Designed by Geissele, a leader in premium firearms components, this 5.56 NATO carbine upper delivers battle-proven performance without unnecessary frills, allowing you to customize it precisely to your needs. Whether you’re assembling a compact CQB rifle or enhancing your existing setup, this black-finished upper stands out for its robust construction and seamless integration.

Key Features

• Cold Hammer Forged Barrel: The 11.5-inch medium-profile barrel is crafted from high-quality 4150 CMV steel, cold hammer forged for superior strength and longevity, ensuring consistent accuracy even under extreme conditions.
• Advanced Gas System: Optimized carbine-length gas system promotes smooth cycling and reduced recoil, enhancing control during rapid fire.
• Precision Rifling: 1:7 twist rate stabilizes a wide range of 5.56 NATO ammunition, from lightweight varmint rounds to heavier barrier-blind projectiles.
• Modular Rail System: Equipped with a Geissele Super Modular Rail (SMR) MK16 M-LOK handguard for easy attachment of optics, lights, and grips, offering versatility without added bulk.
• Durable Finishes: Mag Phosphate barrel coating resists corrosion and wear, while the black anodized upper receiver provides a sleek, professional look that withstands harsh environments.

Technical Specifications

• Barrel Length: 11.5 inches
• Barrel Profile: Medium
• Gas System: Carbine
• Twist Rate: 1:7 inches
• Cartridge Compatibility: 5.56 NATO
• Barrel Finish: Mag Phosphate
• BCG and Charging Handle: Not included – pair with your preferred components for a tailored build
• Muzzle Device: None – allows for custom suppressor or brake installation
• Weight: Approximately 56.96 oz (complete upper without BCG/CH)
• Dimensions: Length: 15 inches, Width/Height: 3.5 inches

Why Choose the Geissele Super Duty Upper?

This barreled upper addresses common pain points for AR-15 builders seeking reliability without compromise. Tired of uppers that loosen under recoil or fail in adverse weather? The Super Duty’s mil-spec construction and enhanced tolerances ensure rock-solid fitment and zero play, solving issues like inconsistent grouping or premature wear. Its compact 11.5-inch length offers superior maneuverability for close-quarters operations, while the chrome-lined bore maintains velocity and accuracy over thousands of rounds. Ideal for law enforcement, competitive shooters, or responsible civilians, it transforms your lower receiver into a high-performance platform that’s ready for duty.

Backed by Geissele’s reputation for innovation, this upper isn’t just a component – it’s an investment in precision engineering that outperforms standard options in endurance testing. Customize it with your BCG, charging handle, and muzzle device to create a rifle that meets your exact specifications.

Ready to build the ultimate AR-15? Add the Geissele Super Duty 11.5-inch Upper to your cart and experience premium quality firsthand.

Frequently Asked Questions

1. Does this upper include a bolt carrier group or charging handle?
No, the BCG and charging handle are not included, giving you the flexibility to select components that match your lower receiver and shooting preferences.

2. Is the barrel suitable for suppressed use?
Yes, the 11.5-inch carbine-length barrel and absence of a muzzle device make it compatible with most suppressors, optimizing for low backpressure setups.

3. What makes this upper different from basic AR-15 uppers?
The Super Duty features a cold hammer forged barrel and Geissele’s rigorous quality control, providing enhanced durability and accuracy compared to mil-spec alternatives, ideal for hard-use applications.