Expected Availabilty: 11/12/2026
Big-Bore Power. Compact Design. Rugged FDE Finish.
The Tex-Rex® .510 Cal FDE Brush Gun combines hard-hitting big-bore performance with a compact, lightweight design and a distinctive Flat Dark Earth (FDE) Cerakote® finish. Designed for hunting applications, this American-made air rifle delivers impressive power in a streamlined package built for maneuverability in thick brush and dense cover.
Precision CNC-machined in Fort Worth, Texas, the Tex-Rex .510 Brush Gun features a 16-inch Lothar Walther® barrel, a 31.5-inch overall length, and a weight of just 6.3 pounds. Its compact dimensions make it easier to maneuver in confined environments while delivering the substantial performance expected from a .510-caliber big-bore air rifle.
The FDE Cerakote finish adds a rugged, understated appearance to a rifle engineered for serious performance.
Why Choose the Tex-Rex .510 Big-Bore Brush Gun?
Serious .510 Big-Bore Power
The Tex-Rex .510 Brush Gun delivers 675+ foot-pounds of energy (FPE) with a 620-grain projectile in the specified configuration. Its adjustable Bias Port System provides flexibility to tailor airflow and performance for different projectile weights and shooting applications.
Compact Overall Design
With an overall length of just 31.5 inches and a 16-inch barrel, the Tex-Rex .510 Brush Gun is designed for maneuverability in thick brush, dense cover, and confined hunting environments. It brings substantial big-bore capability to a compact platform.
Lightweight 6.3-Pound Platform
At just 6.3 pounds, the Tex-Rex .510 Brush Gun offers a lightweight design for a rifle of its caliber. The combination of big-bore power, compact dimensions, and manageable weight makes it a distinctive option for hunters who prioritize maneuverability.
Rugged FDE Cerakote Finish
The Flat Dark Earth Cerakote finish gives this edition a distinctive earth-tone appearance. Its subdued color complements the Brush Gun’s purposeful design and sets it apart from the standard finish.
Precision Made in Texas
Precision CNC-machined in Texas, the Tex-Rex Brush Gun reflects AirForce Airguns’ commitment to American manufacturing, practical engineering, and purpose-built airgun performance.
Lothar Walther® Precision Barrel
The Tex-Rex .510 Brush Gun features a 16-inch Lothar Walther® barrel. The barrel measures 19 mm in diameter and features a 1:26 twist rate.
The barrel is threaded M18×1 for compatibility with appropriately threaded accessories.
Built for Thick Brush
When navigating dense cover, maneuverability matters. The Tex-Rex .510 Brush Gun is designed for hunting environments where a full-length rifle can be cumbersome. Its compact profile makes it easier to handle in tight spaces, while its big-bore capability delivers the performance expected from the Tex-Rex platform.
From thick brush to challenging terrain, the Brush Gun brings together power and maneuverability in a lightweight purpose-built design.
Big-Bore Power. Compact Design. Built for Maneuverability.
Adjustable Bias Port System
The Tex-Rex .510 Brush Gun features an adjustable Bias Port System that uses interchangeable port screws to help tailor airflow and performance to different projectile weights and shooting objectives.
Different port configurations provide different performance characteristics, allowing shooters to configure the rifle for their preferred application. Actual results depend on projectile selection, port configuration, air pressure, and operating conditions.
.510 Bias Port Performance Reference
| Bias Port Size | Slug Weight | Velocity | Energy |
| 0.040″ | 620 grains | 700+ FPS | 675+ FPE |
| 0.067″ | 385 grains | 820+ FPS | 575+ FPE |
| Open Port | 225 grains | 980+ FPS | 480+ FPE |
*Depending on airgun ammunition weight, and tuner setting.
What makes the Tex-Rex .510 Brush Gun different from a standard big-bore air rifle?
The Brush Gun is designed for hunters who prioritize maneuverability in dense cover and confined hunting environments while retaining the substantial power of a .510-caliber platform.
Can the rifle’s power be adjusted?
Yes. The adjustable Bias Port System uses interchangeable port screws to accommodate different projectile weights and performance preferences. Refer to the product’s Bias Port chart above for configuration-specific performance figures.
What should I know before mounting accessories?
Check the mounting interface and thread specifications of each accessory to ensure compatibility with the rifle.
Where is the Tex-Rex Brush Gun manufactured?
The Tex-Rex Brush Gun is precision CNC-machined in Texas, by AirForce Airguns.
A Different Finish. The Same Tex-Rex Attitude.
The Tex-Rex® .510 Cal FDE Brush Gun brings a distinctive new finish to a purpose-built big-bore hunting platform.
SKU: #U305064-FDE