Maxim Defense PDX 505-SPS | 5.56 NATO | 5.50in | 20+1

The Maxim Defense MXM50802 PDX 505-SPS is a compact AR-style pistol chambered for .223 REM/5.56 NATO with a 5.50 inch barrel. It incorporates Maxim’s SCW Pistol System for a low-profile rear end and reduced weight while retaining the handling of a short-barreled AR pistol. The pistol ships optic-ready and is finished in arid brown with a matching polymer grip. For a red-dot option that pairs well with this platform, consider a Trijicon MRO or a similar reflex sight priced under $1,000.

Typical applications for this pistol include short-range target and training work at the range and practical competition where compact handling and quick target transitions are important.

Product Specifications

• The manufacturer is Maxim Defense Industries.
• The model designation is MXM50802 PDX 505-SPS.
• The caliber is listed as .223 REM/5.56 NATO.
• The barrel measures 5.50 inches.
• The action is Semi-Auto.
• The listed capacity is 20 + 1.
• The overall length is 18.75 inches.
• The weight is 5.10 lbs.
• The stock material is Synthetic and uses the SCW Pistol System for a streamlined rear profile.
• The grip material is Arid Brown Polymer.
• The finish is described as Arid Brown Metal Finish.
• The pistol is Optic Ready for mounted red-dot or reflex sights.
• The barrel length range category is 5″ to 5.99″.
• The weight range category is 5 lbs to 5.99 lbs.
• The UPC is 680017508029.

Compact, purpose-built and trimmed for minimal snag, the PDX 505-SPS emphasizes a slim rear profile and reduced mass without sacrificing the controls and ergonomics familiar to AR users. Its optic-ready top rail and compact footprint make it straightforward to set up with a red-dot sight for rapid target acquisition, and the arid brown finish provides a subdued, utilitarian appearance. This pistol suits shooters who want an easily manipulated AR platform for range work or practical competition scenarios where a short overall length and quick handling are priorities.