Geissele Automatics Super Duty Mod 1 16" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Desert Dirt - Precision Build - 08-548S
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Geissele
Overview
The Geissele Automatics Super Duty Mod 1 Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO with a mid-length gas system. Its 1:7 twist rate ensures optimal stabilization for a wide range of bullet weights, making it versatile for various shooting applications. This upper commonly appears in precision builds where reliability and accuracy are essential, allowing builders to create a robust and effective firearm.
Specifications
Geissele Automatics Super Duty Mod 1 16" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Desert Dirt - Precision Build - 08-548S
August 2026 on GunPartPicker
Geissele Automatics Super Duty Mod 1 16" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Desert Dirt - Precision Build - 08-548S ranked #34 of the 690 upper receivers builders added on GunPartPicker in August 2026, behind the Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16", with about 1 in every 250 upper receivers added to builds. Up from #117 in July. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
It was in stock most days in August 2026, but today only Brownells has it in stock. It dipped to $1,172.28 at Brownells for a stretch in August 2026, well under its usual $1,438.99 to $1,450, so sales do come around. Buying today, the lowest price is $1,450 at Brownells, above August's low of $1,172.28, so a better deal may come back.
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Frequently Built With
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