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Geissele
Overview
The Geissele Automatics Super Duty MOD1 Complete Upper is a fully assembled upper receiver designed for the AR-15 platform, featuring a 14.5-inch barrel chambered in 5.56 NATO. With a 1:7 twist rate, this upper is optimized for stabilizing a variety of bullet weights, ensuring reliable accuracy and performance. This complete upper is commonly utilized in builds focused on the 5.56 NATO caliber, making it a robust choice for a versatile firearm setup.
Geissele Automatics Super Duty MOD1 Complete Upper 5.56 14.5 P&W Barrel
Prices checked
Geissele Automatics Super Duty MOD1 Complete Upper 5.56 14.5 P&W Barrel ranked #124 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 #82 of the 2,050 upper receivers builders have added. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on rifle-length gas, and nearly all AR-15.
It was hard to find in October 2026, in stock on only 1 of the 19 days we checked, and today only Primary Arms has it in stock. Prices barely moved in October 2026, holding around $1,325, with no real sale all month. Buying today, the lowest price is $1,325 at Primary Arms.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
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Builds in the community that include the Geissele Automatics Super Duty MOD1 Complete Upper 5.56 14.5 P&W Barrel
| Build | Parts | Total |
|---|---|---|
![]() | 37 | $18813.84 |
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