Geissele Automatics Super Duty AR-15 Barreled Upper Receiver 5.56 Midlength - Black - No Muzzle Device - 14.5" - 08-246B

Upgrade your AR-15 build with the Geissele Automatics Super Duty AR-15 Barreled Upper Receiver in 5.56 NATO, featuring a precise 14.5-inch midlength configuration. Engineered for reliability and performance in demanding conditions, this black-finished upper delivers the premium quality Geissele is renowned for, ensuring your rifle is ready for range days, tactical training, or defensive applications without compromise.

Key Features

• Cold Hammer Forged Barrel: Crafted from high-strength 4150 CMV steel with a durable Mag Phosphate finish, this 14.5-inch medium-profile barrel provides exceptional accuracy and heat dissipation during extended firing sessions.
• Midlength Gas System: Optimized for smoother recoil and reduced wear on components, the midlength setup enhances reliability while maintaining compatibility with a wide range of 5.56 ammunition types.
• 1:7 Twist Rate: Ideal for stabilizing heavier bullets, including those used in military-spec loads, ensuring consistent grouping and terminal performance.
• Integrated Rail System: Equipped with a 13.5-inch MK16 M-LOK handguard featuring Geissele’s proprietary center tab for secure, wobble-free attachment, allowing seamless customization with optics, lights, and grips.
• No Muzzle Device: Ships without a muzzle device, giving you the flexibility to select and install your preferred suppressor, flash hider, or compensator for personalized setup.

Technical Specifications

• Barrel Length: 14.5 inches
• Caliber: 5.56 NATO
• Gas System: Midlength
• Twist Rate: 1:7 RH
• Barrel Profile: Medium
• Finish: Mag Phosphate (barrel), Black anodized (receiver and rail)
• BCG and Charging Handle: Not included – pair with your choice for a custom build
• Weight: Approximately 3.5 lbs (barreled upper assembly)

Why Choose the Geissele Super Duty Upper?

This barreled upper addresses common AR-15 builder challenges like inconsistent accuracy and premature wear by incorporating Geissele’s battle-tested engineering. The chrome-lined bore and chamber resist corrosion and fouling, extending service life even in harsh environments. Users appreciate its balanced weight distribution, which improves handling and reduces fatigue during prolonged use. Whether you’re completing a duty rifle or enhancing a personal defense setup, this upper offers superior modularity and precision that outperforms standard mil-spec options, backed by Geissele’s reputation for innovation in tactical firearms.

Ready to elevate your AR-15? Add the Geissele Super Duty Barreled Upper Receiver to your build today and experience the difference in craftsmanship and performance that serious shooters demand.

Frequently Asked Questions