The Maxim Defense PDX .300 AAC Blackout Pistol (part no. 47823) delivers the same Tier 1 close-quarters design as the rest of the PDX line, this time chambered in .300 Blackout for shooters who want flexible supersonic and subsonic performance in a compact package. At just 18.75 inches overall, it is built for vehicle-based work, home defense, and confined-space maneuvering without giving up rifle-caliber authority. The SCW brace system packs an integrated bolt carrier group and interchangeable buffer weights into a 4-inch brace, keeping the whole package tight and controllable.

Key Specifications

• Chambered in .300 AAC Blackout, a versatile round that runs supersonic or subsonic loads.
• Features a 5.5-inch barrel for a highly compact overall package.
• Ships with a 20-round magazine for dependable standing capacity.
• Built on the SCW brace system, a 4-inch brace with an integrated bolt carrier group and interchangeable buffer weights for tuned recoil management.
• Equipped with the Maxim HATEBRAKE muzzle booster, mounted under the handguard to reduce recoil and visible flash.
• Uses a manual safety selector for simple, positive control.
• Built on a semi-automatic AR platform for reliable, familiar operation.
• Overall length is just 18.75 inches, ideal for tight spaces and vehicle carry.
• The forward-directing HATEBRAKE makes this pistol a strong candidate for suppressed use.

Frequently Asked Questions

What caliber is the PDX .300 Blackout chambered in? .300 AAC Blackout, which runs both supersonic and subsonic loads.

How long is the barrel? 5.5 inches, keeping the whole package under 19 inches overall.

What comes standard on the muzzle? The Maxim HATEBRAKE muzzle booster, which reduces recoil and redirects blast forward.

Buy the Maxim Defense PDX .300 Blackout Pistol

For shooters who want the flexibility of .300 Blackout in a genuinely compact package, the Maxim Defense PDX is one of the strongest options in our AR pistols selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.