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Description
Geissele Automatics Super Duty Assembled AR-15 Upper Receiver, Black
The Geissele Automatics Super Duty Assembled AR-15 Upper Receiver provides a precision-machined, mil-spec foundation for a custom AR-15 upper build. Made from 7075-T6 aluminum with a black hardcoat anodized finish, it arrives with the dust cover and forward assist installed—ready for your selected barrel, handguard, bolt carrier group, and charging handle.
Built to Match the Geissele Super Duty Lower
Designed to pair with the Geissele Super Duty Lower Receiver, this upper provides a clean, cohesive fit for a matched AR-15 build. Its mil-spec AR-15 configuration also makes it suitable for builders using properly matched standard-pattern components.
Precision 7075-T6 Aluminum Construction
Machined from 7075-T6 aluminum, the Super Duty upper receiver provides the strength and dimensional consistency expected in a quality AR-15 build component. The Type III hardcoat anodized black finish helps protect the receiver from wear and corrosion during regular use.
Ready for Your Custom Upper Assembly
The forward assist and port cover are installed before shipment, saving an assembly step. Add your compatible charging handle, bolt carrier group, barrel, gas system, muzzle device, and handguard to build an upper assembly tailored to your intended configuration.
M4 Feed Ramps and Milled T-Marks
M4 feed ramps support reliable cartridge feeding with compatible components. Milled T-marks are cut directly into the anodized finish, providing permanent reference points for consistent optic and accessory placement.
Key Features
- Geissele Automatics Super Duty assembled AR-15 upper receiver
- Precision machined from 7075-T6 aluminum
- Black Type III hardcoat anodized finish
- Dust cover installed
- Forward assist installed
- M4 feed ramps
- Permanently milled T-marks
- Designed to match the Geissele Super Duty Lower Receiver
- Made in the USA
Specifications
- Brand: Geissele Automatics
- Model: Super Duty
- Product Type: Assembled upper receiver
- Platform: AR-15
- Receiver Material: 7075-T6 aluminum
- Finish: Hardcoat anodized
- Color: Black
- Feed Ramps: M4
- Forward Assist: Installed
- Port Door: Installed
- T-Marks: Milled T-marks
- Country of Origin: United States
- SKU / Manufacturer Part Number: 05-3201B
Compatibility
- Designed to mate with the Geissele Super Duty Lower Receiver
- Compatible with properly matched AR-15-pattern barrels, bolt carrier groups, charging handles, and handguards
- Suitable for custom AR-15 upper receiver builds using compatible components
Not Compatible With
- AR-10, LR-308, or other large-frame rifle components
- Non-AR-15-pattern or proprietary upper receiver systems
- Use as a complete upper assembly without separately selected compatible components
Important Notes
- This is an assembled upper receiver, not a complete upper assembly.
- A barrel, gas system, handguard, bolt carrier group, charging handle, and muzzle device are not included.
- Verify fitment and compatibility of all selected components before assembly.
Frequently Asked Questions
What is included with this Geissele Super Duty upper receiver?
The upper receiver ships assembled with the forward assist and dust cover installed.
Is this a complete AR-15 upper assembly?
No. It is an assembled upper receiver. A barrel, gas system, handguard, bolt carrier group, charging handle, and other components must be added separately.
What is the upper receiver made from?
The receiver is machined from 7075-T6 aluminum.
What finish does this Geissele upper receiver have?
It features a black hardcoat anodized finish.
Does this upper have M4 feed ramps?
Yes. This upper receiver includes M4 feed ramps to support reliable feeding with compatible components.
What are the T-marks used for?
The milled T-marks provide permanent reference points for mounting optics and accessories consistently on the upper receiver rail.
Will this match a Geissele Super Duty lower receiver?
Yes. This upper receiver is designed to mate with the Geissele Super Duty Lower Receiver.
Will this work with an AR-10 or LR-308 build?
No. This receiver is designed for the AR-15 platform and is not compatible with large-frame AR components.
Start Your Custom AR-15 Upper Build with Geissele Quality
For builders who want a ready-to-configure AR-15 upper receiver with premium materials, installed essentials, and a precise Super Duty fit, the Geissele Super Duty Assembled Upper Receiver is a dependable choice. Pair it with verified compatible components and build an upper assembly around your intended rifle configuration.