Geissele Automatics AR-15 10.3 Super Duty Nano Complete Upper Receiver Black
All Geissele upper receivers2 options
- Black, this page
- OD Greenout of stock
Geissele
Overview
The Geissele Automatics AR-15 10.3 Super Duty Nano Complete Upper Receiver is a fully assembled upper designed for the AR-15 platform, featuring a 10.3-inch barrel specifically chambered in 5.56 NATO. With a twist rate of 1:7, this upper is optimized for stabilizing a wide range of bullet weights, making it versatile for various ammunition choices. This upper is commonly found in builds that utilize a carbine gas system, providing reliable cycling and performance in compact configurations.
Specifications
Geissele Automatics AR-15 10.3 Super Duty Nano Complete Upper Receiver Black
2 options
- Black, this page
- OD Greenout of stock
Available Merchants(1)
Prices checked
Stock Alert
October 2026 on GunPartPicker
Geissele Automatics AR-15 10.3 Super Duty Nano Complete Upper Receiver Black ranked #360 of the 844 upper receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #663 of the 2,053 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Today the one retailer we track is out of stock. Listed prices start at $1,132.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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SureFire M640DF Scout Light PRO Dual Fuel Weapon Light - 1500 Lumens - Black
Builds Featuring This Part
See all builds →Builds in the community that include the Geissele Automatics Llc Ar-15 10.3 Super Duty Nano Complete Upper Receiver Black
| Build | Parts | Total |
|---|---|---|
 | 7 | $3134.26 |
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