The Maxim Defense PDX-SBR 300 BLK 5.5" Barrel 20rd Urban Grey MXM-48069 is a premium short-barreled rifle chambered in 300 Blackout, designed for operators and serious shooters who demand maximum performance in an ultra-compact package. This PDX-SBR features a 5.5-inch barrel, the MD-SCW stock, an upgraded ALG trigger, the MDX Two-Piece Handguard, and the highly effective Hate Brake flash hider. Finished in a modern Urban Grey color, this SBR delivers exceptional maneuverability, reliability, and ballistic performance.
Why Choose the Maxim Defense PDX-SBR 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 PDX-SBR takes full advantage of this caliber with a 5.5-inch barrel that maintains reliable function with both supersonic and subsonic ammunition. The MD-SCW stock provides a compact and stable platform, while the ALG trigger delivers a crisp, consistent pull that significantly improves accuracy and speed. The MDX Two-Piece Handguard offers ample M-LOK mounting options, and the Hate Brake flash hider helps reduce muzzle flash and recoil. The Urban Grey finish gives this SBR a distinctive, modern tactical appearance.
Key Features of the Maxim Defense PDX-SBR 300 BLK
- 5.5-Inch Barrel – Ultra-compact barrel length optimized for 300 Blackout performance
- 300 Blackout Chambering – Superior stopping power with excellent suppressed and subsonic capabilities
- MD-SCW Stock – Compact and stable stock designed for close-quarters maneuverability
- ALG Trigger – Premium trigger upgrade for a crisp break and short reset
- MDX Two-Piece Handguard – Lightweight, modular handguard with extensive M-LOK mounting options
- Hate Brake Flash Hider – Highly effective muzzle device that reduces flash and manages recoil
- Urban Grey Finish – Modern earth-tone finish with a tactical, low-visibility appearance
- 20-Round Capacity – Compatible with standard 300 BLK magazines
Performance and Build Quality
The Maxim Defense PDX-SBR is built to the highest standards using premium components throughout. The 5.5-inch barrel is specifically tuned for 300 Blackout, providing consistent cycling with a wide range of ammunition. The MD-SCW stock offers a compact collapsed length while still providing a solid cheek weld when extended. The ALG trigger significantly enhances shootability by delivering a clean, consistent pull that allows for faster and more precise follow-up shots. The MDX Two-Piece Handguard provides a strong, lightweight foundation for mounting optics, lights, and other accessories. The Hate Brake flash hider is one of the most effective muzzle devices available, dramatically reducing visible muzzle flash and helping control recoil. The Urban Grey finish provides a modern, non-reflective surface that blends well in various operational environments.
Technical Specifications
| Product Name | Maxim Defense PDX-SBR |
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| Model Number | MXM-48069 |
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| UPC | 680017480691 |
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| Caliber | 300 Blackout (300 BLK) |
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| Barrel Length | 5.5 inches |
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| Capacity | 20 Rounds |
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| Stock | MD-SCW Stock |
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| Trigger | ALG Trigger |
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| Handguard | MDX Two-Piece Handguard |
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| Muzzle Device | Hate Brake Flash Hider |
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| Finish | Urban Grey |
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| Product Type | Short-Barreled Rifle (SBR) |
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| Key Feature | 5.5" 300 BLK SBR with MD-SCW Stock, ALG Trigger & MDX Handguard |
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| Best For | Close-Quarters Battle, Tactical Operations, Home Defense, Suppressed Shooting |
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Ultra-compact power with premium components.
The Maxim Defense PDX-SBR 300 Blackout delivers exceptional performance in a highly maneuverable short-barreled rifle with an Urban Grey 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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