The Maxim Defense PDX 505-SPS in .300 AAC Blackout (brand part no. MXM50822) is a semi-automatic AR-pattern pistol built around a 5.5-inch barrel, pairing the PDX’s subcompact platform with a cartridge built for suppressed and close-quarters use. Maxim Defense finishes this SKU in Arid Brown metal with a matching Arid Brown polymer grip and equips it with the SCW Pistol System instead of a stock or brace. Among AR-pattern pistols in the AR pistols category, the 505-SPS favors shooters who want a .300 Blackout subcompact with optic-ready capability.

Key Specifications

• Chambered in .300 AAC Blackout.
• Operates as a semi-automatic AR-pattern pistol.
• Features a 5.5-inch barrel.
• Feeds from a magazine with a 20+1-round capacity.
• Equipped with the SCW Pistol System rear end.
• Ships optic-ready with no fixed sights.
• Finished in Arid Brown metal with a matching polymer grip.
• The SCW Pistol System weighs just 5.3 ounces.
• Includes a rear single-point QD swivel mount.

Frequently Asked Questions

What caliber is this pistol chambered in? .300 AAC Blackout.

What finish does this pistol have? Arid Brown metal with a matching Arid Brown polymer grip.

Buy the Maxim Defense PDX 505-SPS .300 Blackout Pistol

A compact .300 Blackout pistol with Maxim’s streamlined SCW Pistol System is exactly what the 505-SPS delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.