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Geissele Automatics
Overview
The Geissele Automatics 11.5 Super Duty Stripped Upper Receiver is designed specifically for AR-15 builds, featuring a stripped assembly that allows builders to customize their setup. With an 11.5-inch barrel and a 1:7 twist rate, this upper is optimized for 5.56 NATO caliber ammunition, providing a balance between maneuverability and performance. Commonly found in builds utilizing a mid-length gas system, it suits a variety of applications, from tactical to competition setups.
Geissele Automatics AR-15 11.5 Super Duty Stripped Upper Receiver Black
Geissele Automatics AR-15 11.5 Super Duty Stripped Upper Receiver Black ranked #15 of the 690 upper receivers builders added on GunPartPicker in August 2026, behind the Battle Arms Development Workhorse Barreled AR-15 Upper Receiver - M-LOK - 16", with about 1% of all upper receivers added to builds. Up from #16 in July. Builds with this upper receiver are nearly all chambered in 5.56 NATO, split between mid-length (47%) and carbine-length (37%) gas systems, and nearly all AR-15.
It was hard to find in August 2026, in stock on only 1 of the 21 days we checked, and today none of the 3 retailers we track has it in stock right now. It dipped to $806.37 at Brownells for a stretch in August 2026, well under its usual $1,025, so sales do come around. Listed prices start at $1,025 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 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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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Geissele Automatics Llc Ar-15 11.5 Super Duty Stripped Upper Receiver Black
| Build | Parts | Total |
|---|---|---|
 | 11 | $5425.89 |
 | 11 | $3649.07 |
 | 37 | $6690.90 |
 | 8 | $2450.02 |
 | 11 | $1656.83 |
 | 9 | $3552.24 |
 | 33 | $2969.98 |
 | 13 | $4691.55 |
 | 19 | $3677.82 |
 | 15 | $2540.80 |
 | 13 | $7206.12 |
 | 13 | $2100.92 |
3 global ratings
Top reviews
Picked the 11.5 Super Duty for an SBR build. Black anodize is consistent which is harder than it sounds for receivers at this length. Barrel extension shoulder is correctly cut, my barrel torqued in without binding. M4 feed ramps are present on the upper.
tight fit between upper and lower
Geissele Super Duty 11.5 inch upper in black anodize. M4 feed ramps cut correctly for SBR use. Forging is clean. Takedown pin holes are tight - no slop when pivoted. Worth the cost for a high pressure SBR build.
