
Availability: In Stock
The Faxon Firearms Low Profile Adjustable Gas Block (.750" journal, 3-screw mount) is a purpose-built upgrade for AR-15 shooters who want reliable, tunable gas management without the headaches that plague standard blocks. Unlike conventional designs, Faxon's patent-pending anti-fouling geometry keeps the adjustment screw isolated from carbon buildup at the gas port—meaning it won't seize, won't get gummed up, and stays responsive through thousands of rounds. Whether you're running suppressed fire, experimenting with different loads, or dialing in a precision build, this low-profile block gives you 14 tactile adjustment positions to optimize your rifle's cycling, recoil impulse, and reliability on your terms.
The .750" bore diameter fits standard mid-length and rifle-length gas tubes on most modern AR-15 platforms. Three set screws provide solid barrel journal clamping, and the adjustment mechanism works with either a 3/32" Allen key or a standard flathead screwdriver—no proprietary tools required. At 1" in length, the profile is slim enough not to interfere with optics, handguards, or your intended mounting setup. Built tough for serious shooters who expect consistency whether conditions are clean or harsh.
If you've dealt with frozen adjustable blocks, fouled screws, or finicky gas systems, this Faxon design addresses the real-world failure modes that make other blocks unreliable. It's a straightforward, engineer-first solution for anyone who wants gas-tuning capability without the frustration.
| Brand | Faxon Firearms |
| Gas Journal Size | .750" diameter |
| Mounting Type | 3 set screws |
| Adjustment Tool | 3/32" Allen key or flathead screwdriver |
| Length | 1" |
| Adjustment Positions | 14 tactile settings |
The .750" journal diameter is compatible with standard mid-length and rifle-length gas tube setups on most modern AR-15 rifles. If you're unsure of your gas journal size, measure the diameter of the hole in your barrel where the gas block seats, or check your rifle's documentation.
Yes. The adjustable design lets you fine-tune gas flow for suppressed fire, which typically runs hotter and requires less gas than unsuppressed shooting. You can dial the block down to find the sweet spot for reliability and reduced recoil with your specific suppressor and ammunition.
You can use either a 3/32" Allen key or a flathead screwdriver. No special tools are required, so you can make adjustments at the range, in the field, or at the bench.
The patent-pending anti-fouling geometry isolates the adjustment screw from direct contact with carbon deposits that accumulate at the gas port. This keeps the screw free to turn without seizing, unlike designs where the adjustment mechanism sits in the path of carbon buildup.

SKU: 152745394 • Width: 5in • Height: 1.25in • Depth: 7in • Weight: 0.13oz





Availability: In Stock
The Faxon Firearms Low Profile Adjustable Gas Block (.750" journal, 3-screw mount) is a purpose-built upgrade for AR-15 shooters who want reliable, tunable gas management without the headaches that plague standard blocks. Unlike conventional designs, Faxon's patent-pending anti-fouling geometry keeps the adjustment screw isolated from carbon buildup at the gas port—meaning it won't seize, won't get gummed up, and stays responsive through thousands of rounds. Whether you're running suppressed fire, experimenting with different loads, or dialing in a precision build, this low-profile block gives you 14 tactile adjustment positions to optimize your rifle's cycling, recoil impulse, and reliability on your terms.
The .750" bore diameter fits standard mid-length and rifle-length gas tubes on most modern AR-15 platforms. Three set screws provide solid barrel journal clamping, and the adjustment mechanism works with either a 3/32" Allen key or a standard flathead screwdriver—no proprietary tools required. At 1" in length, the profile is slim enough not to interfere with optics, handguards, or your intended mounting setup. Built tough for serious shooters who expect consistency whether conditions are clean or harsh.
If you've dealt with frozen adjustable blocks, fouled screws, or finicky gas systems, this Faxon design addresses the real-world failure modes that make other blocks unreliable. It's a straightforward, engineer-first solution for anyone who wants gas-tuning capability without the frustration.
| Brand | Faxon Firearms |
| Gas Journal Size | .750" diameter |
| Mounting Type | 3 set screws |
| Adjustment Tool | 3/32" Allen key or flathead screwdriver |
| Length | 1" |
| Adjustment Positions | 14 tactile settings |
The .750" journal diameter is compatible with standard mid-length and rifle-length gas tube setups on most modern AR-15 rifles. If you're unsure of your gas journal size, measure the diameter of the hole in your barrel where the gas block seats, or check your rifle's documentation.
Yes. The adjustable design lets you fine-tune gas flow for suppressed fire, which typically runs hotter and requires less gas than unsuppressed shooting. You can dial the block down to find the sweet spot for reliability and reduced recoil with your specific suppressor and ammunition.
You can use either a 3/32" Allen key or a flathead screwdriver. No special tools are required, so you can make adjustments at the range, in the field, or at the bench.
The patent-pending anti-fouling geometry isolates the adjustment screw from direct contact with carbon deposits that accumulate at the gas port. This keeps the screw free to turn without seizing, unlike designs where the adjustment mechanism sits in the path of carbon buildup.
SKU: 152745394 • Width: 5in • Height: 1.25in • Depth: 7in • Weight: 0.13oz
