The Maxim Defense MDX 510 C SBR 300 BLK 10.3" Barrel 30rd Arid MXM-47984 is a premium short-barreled rifle chambered in 300 Blackout, designed for operators and serious shooters who demand maximum performance in a compact package. Featuring a 10.3-inch barrel, the MDX Two-Piece Handguard, and the highly effective Hate Brake flash hider, this MDX 510 C SBR delivers exceptional power, maneuverability, and modern tactical features in a striking Arid finish.
Why Choose the Maxim Defense MDX 510 C SBR in 300 Blackout?
The 300 Blackout cartridge excels in short-barreled rifles, offering superior terminal ballistics and excellent suppressed performance compared to 5.56 NATO. The Maxim Defense MDX 510 C SBR takes full advantage of this caliber with a 10.3-inch barrel that maintains reliable function with both supersonic and subsonic ammunition. The MDX Two-Piece Handguard provides a lightweight yet rigid platform with extensive M-LOK mounting options, while the Hate Brake flash hider significantly reduces muzzle flash and recoil. Finished in an attractive Arid color scheme, this SBR combines professional-grade performance with a modern, tactical appearance that stands out in the field or at the range.
Key Features of the Maxim Defense MDX 510 C SBR 300 BLK
- 10.3-Inch Barrel – Compact barrel optimized for 300 Blackout with excellent reliability and ballistics
- 300 Blackout Chambering – Superior stopping power and outstanding suppressed performance
- MDX Two-Piece Handguard – Lightweight, modular design with ample M-LOK accessory mounting
- Hate Brake Flash Hider – Highly effective muzzle device that reduces flash and manages recoil
- Arid Color Finish – Modern earth-tone finish with a tactical, low-visibility appearance
- 30-Round Capacity – Compatible with standard 300 BLK magazines
- Compact SBR Configuration – Designed for maximum maneuverability in close-quarters environments
- Model MXM-47984 – Official Maxim Defense part number
Performance and Build Quality
The Maxim Defense MDX 510 C SBR 300 BLK is built to the highest standards using premium components throughout. The 10.3-inch barrel is specifically tuned for 300 Blackout, delivering consistent cycling with a wide range of ammunition types. The MDX Two-Piece Handguard offers a strong, lightweight foundation that allows users to easily mount optics, lights, lasers, and other accessories. The Hate Brake flash hider is one of the most effective muzzle devices in its class, dramatically reducing visible muzzle flash and helping control muzzle rise during rapid fire. The Arid finish provides a modern, non-reflective surface that blends well in various operational environments. Every detail of this rifle reflects Maxim Defense’s commitment to producing compact, high-performance short-barreled rifles that meet the demanding needs of professional users and serious enthusiasts.
Technical Specifications
| Product Name | Maxim Defense MDX 510 C SBR |
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| Model Number | MXM-47984 |
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| UPC | 680017479848 |
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| Caliber | 300 Blackout (300 BLK) |
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| Barrel Length | 10.3 inches |
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| Capacity | 30 Rounds |
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| Handguard | MDX Two-Piece Handguard |
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| Muzzle Device | Hate Brake Flash Hider |
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| Finish | Arid |
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| Product Type | Short-Barreled Rifle (SBR) |
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| Key Feature | 10.3" 300 BLK SBR with MDX Two-Piece Handguard & Hate Brake |
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| Best For | Close-Quarters Battle, Suppressed Shooting, Tactical Operations, Home Defense |
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Compact power with modern tactical features.
The Maxim Defense MDX 510 C SBR in 300 Blackout delivers premium components and outstanding performance in a highly maneuverable Arid finish.
Important Notice: This product is a short-barreled rifle (SBR) and is regulated under the National Firearms Act (NFA). It is the buyer’s responsibility to ensure compliance with all applicable federal, state, and local laws, including proper NFA registration, tax stamp requirements, and any additional state restrictions. This product is intended for lawful use only by individuals legally allowed to possess NFA firearms. Always follow proper firearm safety rules. Keep out of reach of children.
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