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Geissele
Overview
The Geissele Automatics Ultra Duty Magazine Release Button is a robust component designed to enhance the functionality of your AR-15. With its durable nitride finish, this black magazine release button provides a reliable and smooth operation, allowing for quick magazine swaps in critical situations. This part is commonly found in builds featuring a mid-length gas system chambered in 5.56 NATO, making it a practical choice for those aiming for performance and efficiency.
Geissele Automatics Ultra Duty Magazine Release Button ranked #23 of the 91 magazine releases builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since January 2026. All time, it ranks #17 of the 165 magazine releases builders have added. Builds with this magazine release are nearly all chambered in 5.56 NATO, mostly on mid-length gas (67%, then carbine-length 33%), and mostly AR-15 (91%, then AR-10 9%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today 2 of the 5 retailers we track have it in stock. It dipped to $9.80 at Brownells for a stretch in August 2026, well under its usual $13 to $16.99, so sales do come around. Buying today, the lowest price is $13 at AT3 Tactical, above August's low of $9.80, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every magazine release by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Magazine Release Guide →The part most often added in each category by the 63 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Geissele Automatics Ultra Duty Magazine Release Button
| Build | Parts | Total |
|---|---|---|
 | 27 | $7975.31 |
 | 14 | $1057.74 |
 | 26 | $5778.05 |
 | 16 | $1187.98 |
 | 24 | $2449.74 |
 | 27 | $3055.40 |
 | 18 | $1682.69 |
| 21 | $2794.16 |
2 global ratings
Top reviews
Geisseles ultra duty mag release button has a noticeably larger paddle face which makes it easier to drop a mag with the trigger finger. The black anodizing is matte and matches their other parts. Internal threading was clean, the spring went together without binding.
Geissele Ultra Duty mag release button has slightly different black anodize finish than my Geissele safety. Function is excellent, larger paddle for easy press. Drops in with the standard catch spring. Cosmetic variation between Geissele black parts.
