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Geissele
Overview
The Geissele Super AR-15 Gas Block is designed for .750 diameter barrels and features a low profile that allows for easy installation under handguards. With a nitride finish, this steel gas block is built to withstand the rigors of consistent use, and its compatibility with a pistol-length gas system ensures reliable cycling in builds chambered in 5.56 NATO. This gas block is commonly found in pistol builds, making it an ideal choice for those looking to optimize performance in compact configurations.
Geissele Super AR-15 Gas Block .750 Low Profile ranked #22 of the 75 gas blocks builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #25 of the 177 gas blocks builders have added. Builds with this gas block are mostly chambered in 5.56 NATO (75%, then .223 Wylde 17%), mostly on mid-length gas (60%, then carbine-length 25%), and mostly AR-15 (82%, then AR-10 18%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $53.48 at Brownells for a stretch in August 2026, well under its usual $74.99 to $78.99, so sales do come around. Buying today, the lowest price is $83.99 at Ammunition Depot, above August's low of $53.48, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every gas block by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Gas Block Guide →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 Super AR-15 Gas Block .750 Low Profile
| Build | Parts | Total |
|---|---|---|
 | 12 | $3162.20 |
 | 12 | $3186.69 |
 | 12 | $1021.99 |
 | 17 | $1847.05 |
 | 19 | $3251.48 |
 | 22 | $1971.36 |
 | 19 | $2361.55 |
 | 19 | $1723.84 |
2 global ratings
Top reviews
Geissele Super .750 low profile gas block has slightly different black finish than my other Geissele parts in direct light. Mechanically perfect, set screws engage cleanly. Function is exactly what you need. Cosmetic only variation.
Geissele Super .750 low profile gas block is well machined but install required care to clock it properly with the gas tube. Took two tries to get the rotation right before tightening. Once installed it stays put. Quality steel construction.
