Maxim Defense SDX 505 Suppressed SBR .300 Blackout 5.5" Barrel Arid with DSX:D 7.62 Suppressor, MD-CQB Stock & ALG Trigger – MXM-49816
The Maxim Defense SDX 505 Suppressed SBR is a factory-built, ultra-compact suppressed Short Barrel Rifle chambered in .300 Blackout. Model MXM-49816 features a 5.5-inch barrel paired with the integrated DSX:D 7.62 suppressor, finished in a distinctive Arid color, and equipped with the MD-CQB stock, ALG trigger, and SDX two-piece handguard. This complete suppressed package delivers exceptional maneuverability, powerful terminal ballistics, and reliable performance in one of the most compact .300 Blackout suppressed SBRs available.
Factory-Suppressed .300 Blackout Short Barrel Rifle
The SDX 505 represents Maxim Defense’s commitment to producing complete, optimized suppressed weapon systems. By integrating the DSX:D 7.62 suppressor directly onto the 5.5-inch barrel at the factory, Maxim eliminates the need for aftermarket mounting solutions and ensures proper alignment and function from day one. The .300 Blackout cartridge is perfectly suited for this ultra-short configuration, offering excellent terminal performance at subsonic velocities while maintaining compatibility with standard AR-15 magazines. The Arid finish provides a modern tactical appearance that performs well in desert and mixed environments.
Key Features of the Maxim Defense SDX 505 Suppressed SBR
- 5.5-Inch Barrel – Ultra-short barrel optimized for suppressed .300 Blackout performance and maximum compactness.
- DSX:D 7.62 Suppressor – Factory-integrated suppressor specifically designed and tuned for the SDX platform.
- Arid Finish – Modern desert/tan color scheme with excellent low-visibility characteristics in arid and mixed environments.
- MD-CQB Stock – Maxim Defense CQB stock for enhanced stability, adjustability, and control.
- ALG Trigger – Upgraded ALG trigger for a crisp, consistent, and reliable trigger pull.
- SDX Two-Piece Handguard – Lightweight modular handguard with excellent heat dissipation and multiple accessory mounting points.
- 30-Round Capacity – Compatible with standard AR-15 magazines.
- Model Number: MXM-49816
- UPC: 680017498160
Technical Specifications
| Specification | Details |
|---|
| Brand | Maxim Defense Industries |
| Model | SDX 505 Suppressed SBR |
| Model Number | MXM-49816 |
| Caliber | .300 Blackout (300 BLK) |
| Barrel Length | 5.5 Inches |
| Suppressor | DSX:D 7.62 Suppressor (Integrated) |
| Stock | MD-CQB Stock |
| Trigger | ALG Trigger |
| Handguard | SDX Two-Piece Handguard |
| Finish | Arid |
| Capacity | 30 Rounds |
| Best Use | CQB, Suppressed Operations, Vehicle Use, Home Defense, Tactical |
Why Choose the Maxim Defense SDX 505 Suppressed SBR in Arid?
The Maxim Defense SDX 505 stands out as a complete, factory-optimized suppressed Short Barrel Rifle. The integration of the DSX:D 7.62 suppressor with the short 5.5-inch barrel ensures proper alignment, reliable function, and optimized sound suppression right out of the box. The Arid finish provides a modern tactical aesthetic that performs well in desert and arid environments. Combined with the MD-CQB stock, upgraded ALG trigger, and modular SDX two-piece handguard, this rifle delivers a level of refinement and performance rarely found in factory-suppressed .300 Blackout platforms. For users who want a ready-to-deploy suppressed SBR without the hassle of separate Form 4 filings or custom suppressor integration, the MXM-49816 is an outstanding choice.
Ideal Applications
The SDX 505 Suppressed SBR excels in close-quarters battle, vehicle-based operations, and any scenario where a compact size and low audible signature are critical. The .300 Blackout cartridge paired with a short barrel and dedicated suppressor provides excellent terminal performance at subsonic velocities. The Arid color scheme makes this rifle particularly appealing to shooters operating in desert or arid regions. Tactical professionals, special operations personnel, and serious enthusiasts who require a high-performance suppressed weapon system will find this rifle especially valuable. Its ultra-compact size makes it well-suited for discreet transport and operations in confined spaces.
Build Quality and Performance
Maxim Defense is recognized for producing purpose-built, high-quality firearms and components. The SDX 505 is engineered as a complete system, with every component selected to work in harmony. The SDX two-piece handguard offers excellent heat management and multiple mounting points for lights, lasers, and other accessories. The ALG trigger upgrade provides a noticeably smoother and more consistent trigger pull compared to standard mil-spec triggers. The integrated DSX:D 7.62 suppressor is specifically tuned for the 5.5-inch barrel, delivering effective sound reduction and flash suppression. The Arid finish adds a premium, modern appearance while maintaining durability in harsh conditions. This factory-assembled configuration ensures proper timing, reliable cycling, and consistent performance right out of the box.
Experience premium suppressed performance with the Maxim Defense SDX 505 Suppressed SBR. Model MXM-49816 delivers a factory-built .300 Blackout Short Barrel Rifle featuring a 5.5-inch barrel, integrated DSX:D 7.62 suppressor, Arid finish, MD-CQB stock, ALG trigger, and SDX two-piece handguard, making it an outstanding choice for suppressed operations, close-quarters work, and tactical applications.
