The Maxim Defense PDX 505-SPS is a high-performance 5.56x45mm NATO pistol designed for superior maneuverability without sacrificing power. Featuring a compact 5.5″ barrel, this ultra-short firearm is ideal for close-quarters combat (CQC), home defense, and tactical applications. The Urban Gray finish paired with a black M-Lok handguard ensures a sleek, modern look while providing enhanced grip and accessory mounting options.
Built with Maxim Defense’s patented short-stroke piston system, the PDX 505-SPS delivers exceptional reliability, reduced recoil, and smoother cycling compared to direct impingement systems. The SB Tactical stabilizing brace (included) offers improved control and stability, making it easy to handle in rapid-fire scenarios.
Key Features:
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Caliber: 5.56x45mm NATO (accepts .223 Rem)
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Barrel Length: 5.5″ – Compact yet highly effective
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Handguard: Black M-Lok for lightweight customization
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Finish: Urban Gray for a distinctive tactical appearance
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Magazine Capacity: 20-round PMAG included
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Piston-Driven System: Cleaner, cooler, and more reliable
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SB Tactical Brace: Enhances stability and control
Whether you need a home defense weapon, truck gun, or tactical sidearm, the Maxim Defense PDX 505-SPS combines compact design, rugged durability, and elite performance. Optimized for fast target acquisition and low recoil, this firearm is perfect for shooters who demand precision in a small package.
Upgrade your arsenal with the PDX 505-SPS—engineered for professionals who refuse to compromise.
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