Maxim Defense MDX 508-SBR 5.56 NATO 8.5" Barrel with Black Finish, MD-CQB Stock, ALG Trigger & Hate Brake – MXM-47905
The Maxim Defense MDX 508-SBR is a high-performance Short Barrel Rifle chambered in 5.56 NATO and built for operators and enthusiasts who demand maximum capability in a compact package. Model MXM-47905 features an 8.5-inch barrel, a professional Black finish, the MD-CQB stock, an upgraded ALG trigger, MDX two-piece handguard, and the signature Hate Brake flash hider. This factory-configured SBR delivers outstanding maneuverability, reliability, and accuracy in one of the most versatile 5.56 platforms available.
Compact 5.56 NATO Short Barrel Rifle
The MDX 508-SBR combines an 8.5-inch barrel with premium components to create a highly maneuverable rifle that excels in close-quarters battle, vehicle operations, and dynamic environments. The 8.5-inch barrel provides excellent ballistic performance while keeping the overall length minimal. Paired with the MD-CQB stock, this SBR offers superior ergonomics and stability without sacrificing the compact profile that makes short-barreled rifles so effective in confined spaces.
Key Features of the Maxim Defense MDX 508-SBR
- 8.5-Inch Barrel – Optimized length for 5.56 NATO performance in a compact SBR format.
- Classic Black Finish – Professional, low-visibility finish suitable for tactical, law enforcement, and civilian use.
- 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.
- MDX Two-Piece Handguard – Lightweight modular handguard with superior heat dissipation and multiple accessory mounting points.
- Hate Brake Flash Hider – Maxim Defense’s signature muzzle device that reduces flash and helps manage recoil.
- 30-Round Capacity – Compatible with standard AR-15 magazines for sustained fire capability.
- Model Number: MXM-47905
- UPC: 680017479053
Technical Specifications
| Specification | Details |
|---|
| Brand | Maxim Defense Industries |
| Model | MDX 508-SBR |
| Model Number | MXM-47905 |
| Caliber | 5.56 NATO |
| Barrel Length | 8.5 Inches |
| Stock | MD-CQB Stock |
| Trigger | ALG Trigger |
| Handguard | MDX Two-Piece Handguard |
| Muzzle Device | Hate Brake Flash Hider |
| Finish | Black |
| Capacity | 30 Rounds |
| Best Use | CQB, Vehicle Operations, Home Defense, Tactical Use, Dynamic Shooting |
Why Choose the Maxim Defense MDX 508-SBR?
The Maxim Defense MDX 508-SBR stands out as a complete, factory-optimized Short Barrel Rifle. Rather than piecing together aftermarket parts, this model comes fully equipped with Maxim Defense’s own MD-CQB stock, an upgraded ALG trigger, and the distinctive Hate Brake. The 8.5-inch barrel paired with the MD-CQB stock creates an excellent balance of compactness and performance. The classic Black finish provides a professional, tactical appearance that remains effective across a wide range of environments. Maxim Defense has earned a strong reputation for producing reliable, high-quality firearms, and the MDX 508-SBR continues that tradition with a purpose-built platform ready for serious use.
Ideal Applications
This 5.56 NATO Short Barrel Rifle is well-suited for a variety of demanding applications. Tactical professionals and law enforcement will appreciate the compact size and enhanced control provided by the MD-CQB stock and ALG trigger. Home defense users benefit from the maneuverability of the 8.5-inch barrel combined with the stability of the CQB stock. The Black finish makes this SBR a versatile choice for users who prefer a traditional, professional appearance suitable for any environment. Competitive shooters in dynamic rifle disciplines will also find the combination of the Hate Brake and ALG trigger beneficial for fast, accurate follow-up shots. Its overall length and weight make it easy to handle in confined spaces while still delivering the proven performance of the 5.56 NATO cartridge.
Build Quality and Performance
Maxim Defense constructs the MDX 508-SBR with quality components designed for real-world reliability and performance. The 8.5-inch barrel provides a strong balance of velocity and handling characteristics. The MD-CQB stock offers a stable and adjustable shooting platform, while the ALG trigger delivers a noticeably smoother and more consistent pull than standard mil-spec triggers. The MDX two-piece handguard provides excellent heat management and multiple mounting points for optics, lights, and other accessories. The Hate Brake flash hider reduces visible signature and helps control muzzle rise during rapid fire. The durable Black finish maintains a professional appearance while withstanding harsh conditions. Every MDX 508-SBR is built to Maxim Defense’s high standards, ensuring consistent performance across a wide range of conditions and ammunition types.
Experience premium compact performance with the Maxim Defense MDX 508-SBR. Model MXM-47905 delivers an 8.5-inch barrel 5.56 NATO Short Barrel Rifle featuring a classic Black finish, MD-CQB stock, ALG trigger, MDX two-piece handguard, and Hate Brake flash hider, making it an excellent choice for close-quarters operations, home defense, and tactical applications.
