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Description Elevate your AR-15 build with the Geissele Automatics Super Duty AR-15 Barreled Upper Receiver in 5.56 Carbine configuration. Engineered for reliability and precision in demanding conditions, this 16-inch barreled upper delivers exceptional performance without the hassle of a muzzle device, allowing you to customize your setup to perfection. Whether you’re a seasoned builder or refining your tactical rifle, the Super Duty stands out for its cold hammer-forged barrel and robust construction, ensuring consistent accuracy and durability on the range or in the field. Key Features Cold Hammer-Forged Barrel: Crafted from high-quality 4150 CMV steel with a manganese phosphate finish, this 16-inch medium-profile barrel resists wear and maintains zero under heavy use, providing reliable feeding and extraction for 5.56 NATO rounds. Mid-Length Gas System: Optimized for smoother cycling and reduced recoil compared to carbine-length systems, enhancing shooter comfort and control during extended sessions. 1:7 Twist Rate: Ideal for stabilizing heavier bullets, from 55-grain FMJ to 77-grain match loads, making it versatile for plinking, home defense, or precision shooting. No BCG or Charging Handle Included: Offers flexibility to pair with your preferred bolt carrier group and handle, keeping your build lightweight and tailored to your needs. Super Duty Upper Receiver: Machined from 7075-T6 aluminum with Geissele’s proprietary nanoweapon coating for superior corrosion resistance and a sleek black finish. Specifications Barrel Length: 16 inches Barrel Profile: Medium Gas System Length: Midlength Twist Rate: 1:7 Cartridge Compatibility: 5.56 NATO Barrel Finish: Mag Phosphate Weight: 66.8 oz Dimensions (L x W x H): 21 x 3.5 x 3.5 inches Why Choose the Geissele Super Duty Upper Receiver? Built to exceed mil-spec standards, this barreled upper addresses common AR-15 pain points like inconsistent gas flow and barrel whip. The mid-length system minimizes felt recoil, while the chrome-lined bore and chamber ensure longevity and easy cleaning. Customers appreciate its balance of weight and maneuverability, making it a top choice for custom builds that prioritize quality over compromise. With Geissele’s reputation for innovation—seen in their Super Compact Gas Block and tapered profile—this upper enhances accuracy and reliability, helping you achieve sub-MOA groups with the right ammo. Ready to complete your AR-15 with a component trusted by professionals? Add the Geissele Super Duty Barreled Upper Receiver to your cart today and experience the difference in craftsmanship and performance. Frequently Asked Questions 1. Does this upper include a handguard?No, the Super Duty Barreled Upper Receiver comes without a handguard, BCG, or charging handle, giving you full customization options for rails and optics. 2. Is the barrel chrome-lined?Yes, the cold hammer-forged barrel features a chrome-lined bore and chamber for enhanced durability and corrosion resistance. 3. What gas block is used?It includes Geissele’s Super Compact Gas Block, designed for low-profile mounting and reliable operation with the mid-length gas system. Additional information Weight 66.8 oz Dimensions 21 × 3.5 × 3.5 in Barrel Finish Mag Phosphate Barrel Profile Medium Cartridge Compatibility 5.56 NATO Barrel Length 16" Gas System Length Midlength Twist Rate 1-7 BCG / Charging Handle Not Included MPN 08-247B UPC 817953027523