Maxim Defense PDX 505-SPS 7.62x39mm 5.50in 20+1

The Maxim Defense MXM50801 PDX 505-SPS is a compact AR-style pistol chambered in 7.62 x 39mm designed for users seeking a short-barrel platform with streamlined ergonomics. It uses Maxim’s SCW Pistol System in place of a stock or brace to reduce bulk and eliminate protruding angles. The SCW Pistol System is lightweight and includes a rear single-point QD swivel mount to accommodate sling use without adding unnecessary weight. The platform ships optic-ready and pairs a 5.50 inch barrel with a 20 + 1 capacity for a compact, practical package.

Key Specifications

• It operates as Semi-Auto.
• It is chambered in 7.62 x 39mm.
• The barrel measures 5.50 inches for compact handling.
• The magazine capacity is 20 + 1 rounds.
• The unloaded weight is listed as 5.10 lbs.
• The overall length is 18.75 inches.
• It ships with a Black Polymer grip.
• The platform is specified as Optic Ready for modern sighting options.
• The rear interface uses a Synthetic material.
• The barrel length range is noted as 5 to 5.99 inches.

This compact PDX 505-SPS blends a short, controllable barrel with Maxim Defense’s streamlined SCW Pistol System to deliver a purpose-built package for close-quarters or short-range applications where compactness and reliability matter. Its optic-ready upper and lightweight rear system make it a practical choice for those who value minimized bulk without sacrificing functionality.

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