The Maxim Defense PDX 505-SPS is a compact AR-style pistol chambered in 7.62x39mm, designed for users who need a short-barrel platform for tactical use, range work, or short-range hunting where lawful. It pairs a 5.50-inch barrel with Maxim’s streamlined SCW Pistol System to reduce bulk at the rear of the pistol while retaining a single-point QD sling attachment. The configuration emphasizes compact handling and an optic-ready layout for reliable, practical operation in confined or mobile environments.

Key Specifications

• The caliber is 7.62 x 39mm, built for that chambering’s standard ammunition types.
• The barrel length is 5.50 inches, providing a compact profile for close-quarters handling.
• The magazine capacity is 20 + 1 rounds as supplied in the product data.
• The action is Semi-Auto for standard AR-style operation.
• The overall length measures 18.75 inches for a balance of compactness and controllability.
• The listed weight is approximately 5.10 lbs, consistent with the stated weight range.
• The grip material is black polymer and the stock material is synthetic for durable, low-maintenance handling surfaces.
• The pistol is optic ready to accept a wide range of electronic sights and optics.

The PDX 505-SPS favors a no-nonsense, low-profile rear assembly that trims bulk while retaining a QD sling mount, making it suited to shooters who prioritize compact ergonomics and adaptability. Its combination of a short barrel, optic-ready top rail, and durable materials makes it a practical choice for range-focused users and those seeking a maneuverable AR-style platform. Note: Several jurisdictions restrict magazine capacity to 10 rounds; these include Hawaii, California, Connecticut, the District of Columbia, Illinois, Maryland, Massachusetts, New Jersey, New York, Rhode Island, Vermont, Washington, and Colorado.