Faxon Firearms Adjustable Gas Block, AR-15, .750″ ID, Matte, Black
Original price was: $89.00.$82.00Current price is: $82.00.
Faxon Firearms Adjustable Gas Block, .750″ ID, Matte, Black for AR-15. Patent pending. 14 tactile detented settings. Anti-carbon-fouling screw placement. Works suppressed and unsuppressed.
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The Faxon Firearms Adjustable Gas Block is a patent pending low profile adjustable gas block built for AR-15 barrels with a .750 inch gas block journal. It features a unique adjustment screw placement that keeps the screw away from gas port carbon, and because of this, the block stays free from carbon fouling and does not seize up during extended use or suppressed fire. As a result, the Faxon adjustable gas block gives you consistent, hassle-free adjustability whether you run it suppressed or unsuppressed.
In addition, the block offers 14 tactile, detented settings so you can move between gas positions with a positive click and know exactly where you are in the adjustment range. Furthermore, each detented position holds firmly under recoil, so your gas setting stays put once you dial it in for your load and setup. Moreover, the low profile design fits under most free-float handguards, making this block a clean drop-in for any .750 AR-15 build that runs a free-float rail. The matte black finish keeps glare low and blends with standard AR components. When you want a Faxon adjustable gas block that gives you precise control over your rifle’s cycling and recoil for both suppressed and standard shooting, this one covers both.
However, this gas block fits .750 inch gas block journals only and does not work on .625 or .936 bore sizes. Therefore, confirm your AR-15 barrel’s gas block journal measures .750 before ordering the Faxon Firearms Adjustable Gas Block.
Faxon Adjustable Gas Block Key Features
- Patent pending low profile adjustable gas block for .750″ AR-15 barrels
- 14 tactile, detented adjustment settings
- Unique screw placement prevents gas port carbon contact — no fouling or seizing
- Works suppressed and unsuppressed
- Low profile design clears most free-float handguards
- Matte black finish
Specifications
| UPC | 816341028265 |
|---|---|
| Manufacturer | Faxon Firearms |
| Manufacturer Part # | GBA-LP-750-3 |
| Model | Adjustable Gas Block |
| Type | Gas Block |
| Description | .750 |
| Diameter | .750″ |
| Settings | 14 Tactile, Detented |
| Fit | AR-15 |
| Color | Black |
| Finish | Matte |
| Subcategory | Long Gun Parts |
| Type | Gas Block |
|---|---|
| Model | Adjustable Gas Block |
| Diameter | .750" |
| Settings | 14 Detented |
| Fit | AR-15 |
| Color | Black |
| Finish | Matte |
| Brand |
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Frequently Asked Questions
What does .750″ ID mean on a gas block?
The .750″ ID (inner diameter) refers to the bore of the gas block — it is designed to fit barrels with a .750-inch outside diameter at the gas block seat. This is the most common diameter on mil-spec government-profile and M4-profile AR-15 barrels. Measure your barrel’s gas block journal before ordering to confirm compatibility.
What is the advantage of an adjustable gas block?
An adjustable gas block lets the shooter tune the amount of gas bled from the barrel to cycle the action. This is useful for suppressed shooting (which increases backpressure), shooting suppressed and unsuppressed with the same rifle, and optimizing reliability with different ammunition loads or buffer weights.
How is the Faxon adjustable gas block installed?
The Faxon adjustable gas block replaces the existing gas block on the barrel and is secured via set screws. The barrel journal must be the correct diameter (.750″ for this model), and the gas port on the block must be aligned with the barrel’s gas port before tightening. A free-float handguard is typically required to access an adjustable gas block after installation.
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