The Maxim Defense PDX-SBR 5.56 NATO 5.5" Barrel 20rd Urban Grey MXM-48070 is a premium short-barreled rifle engineered for maximum performance in an ultra-compact package. Chambered in 5.56 NATO with a 5.5-inch barrel, this PDX-SBR features 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 tactical functionality for close-quarters battle and professional use.
Why Choose the Maxim Defense PDX-SBR 5.56 NATO?
The Maxim Defense PDX-SBR is designed for operators and serious shooters who require a highly compact 5.56 NATO platform without sacrificing performance. The 5.5-inch barrel keeps the overall length extremely short while still providing reliable function and effective ballistics at close to medium ranges. The MD-SCW stock offers a compact collapsed length with a stable shooting platform when extended. The ALG trigger provides a crisp, consistent pull that greatly improves accuracy and follow-up shot speed. Combined with the MDX Two-Piece Handguard and Hate Brake flash hider, this SBR offers outstanding ergonomics and control in a lightweight, maneuverable package. The Urban Grey finish gives the rifle a modern, tactical appearance that stands out from traditional black firearms.
Key Features of the Maxim Defense PDX-SBR 5.56
- 5.5-Inch Barrel – Ultra-compact barrel length optimized for 5.56 NATO performance
- 5.56 NATO Chambering – Versatile and widely available caliber with proven reliability
- 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 AR-15 magazines
Performance and Build Quality
The Maxim Defense PDX-SBR 5.56 NATO is built to the highest standards using premium components throughout. The 5.5-inch barrel is paired with a gas system specifically tuned for reliable cycling with 5.56 NATO ammunition. The MD-SCW stock provides a compact collapsed length while maintaining 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 offers a strong, lightweight platform for mounting optics, lights, and other accessories. The Hate Brake flash hider dramatically reduces visible muzzle flash and helps control recoil during rapid fire. The Urban Grey finish provides a modern, non-reflective surface that blends well in various operational environments. This SBR reflects Maxim Defense’s commitment to producing compact, high-performance firearms that meet the demanding needs of professional users.
Technical Specifications
| Product Name | Maxim Defense PDX-SBR |
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| Model Number | MXM-48070 |
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| UPC | 680017480707 |
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| Caliber | 5.56 NATO / .223 Remington |
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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" 5.56 SBR with MD-SCW Stock, ALG Trigger & MDX Handguard |
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| Best For | Close-Quarters Battle, Tactical Operations, Home Defense, Compact Rifle Use |
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Ultra-compact performance with premium components.
The Maxim Defense PDX-SBR 5.56 NATO delivers exceptional maneuverability and reliability in a highly compact 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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