The Maxim Defense SDX-510 Integrally Suppressed Upper Receiver 5.56 NATO 10.3 in. Black w/ DSX Suppressor MXM-49763 is a complete, factory-integrated suppressed upper receiver designed for shooters who demand maximum sound reduction in a compact, reliable package. This ready-to-install upper combines a 10.3-inch barrel with Maxim Defense’s advanced DSX suppressor technology, delivering exceptional sound suppression while maintaining a short overall length and excellent handling characteristics.
Why Choose the Maxim Defense SDX-510 Integrally Suppressed Upper?
Traditional suppressors add significant length and weight to a firearm. The Maxim Defense SDX-510 solves this problem by integrating the suppressor directly into the upper receiver assembly. This integrally suppressed design results in a much shorter overall package compared to a standard barrel with a muzzle-mounted suppressor. The 10.3-inch barrel paired with the DSX suppressor provides outstanding sound reduction while preserving the maneuverability of a short-barreled rifle. Whether used for home defense, tactical applications, or suppressed shooting at the range, the SDX-510 offers a high-performance solution in a factory-assembled, drop-in format.
Key Features of the Maxim Defense SDX-510 Integrally Suppressed Upper Receiver
- Integrally Suppressed Design – Suppressor is built into the upper for a shorter overall length
- 10.3 Inch Barrel – Optimized length for balance between velocity and maneuverability
- DSX Suppressor Technology – Advanced Maxim Defense suppressor for superior sound reduction
- 5.56 NATO Chambering – Compatible with both 5.56 NATO and .223 Remington ammunition
- Matte Black Finish – Durable, corrosion-resistant finish for long-term reliability
- Complete Upper Assembly – Includes barrel, gas system, handguard, and integrated suppressor
- Drop-In Ready – Designed for easy installation on standard AR-15 lower receivers
- Model MXM-49763 – Official Maxim Defense part number
Performance and Build Quality
The Maxim Defense SDX-510 Integrally Suppressed Upper Receiver is engineered with precision and built to the high standards Maxim Defense is known for. The integral suppressor design not only reduces the overall length of the firearm but also helps maintain a more balanced weight distribution compared to traditional suppressor setups. The DSX suppressor is specifically tuned to deliver excellent sound attenuation while minimizing back pressure and gas blowback to the shooter. The 10.3-inch barrel is manufactured from high-quality steel and features a durable finish that resists wear from regular use. This upper receiver assembly is designed to function reliably with a wide range of AR-15 lower receivers, making it a versatile choice for custom builds or upgrades to existing firearms.
Technical Specifications
| Product Name | Maxim Defense SDX-510 Integrally Suppressed Upper |
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| Model Number | MXM-49763 |
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| UPC | 680017497637 |
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| Caliber | 5.56 NATO |
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| Barrel Length | 10.3 inches |
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| Suppressor | Integrated DSX Suppressor |
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| Finish | Matte Black |
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| Product Type | Integrally Suppressed Upper Receiver |
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| Compatibility | Standard AR-15 Lower Receivers |
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Compact size. Maximum suppression.
The Maxim Defense SDX-510 delivers factory-integrated sound reduction in a short, reliable package.
Important Notice: This product is intended for lawful use only. It is the buyer’s responsibility to ensure the product is used in accordance with all applicable federal, state, and local laws, including those regarding short-barreled rifles and suppressors. Possession and use of this product may be restricted or prohibited in certain jurisdictions. Always comply with all NFA regulations where applicable. Keep out of reach of children. This product is intended for lawful use only.
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