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Maxim Defense Announces New PDX: The MD-1505

We've seen how the Minnesota Manufacturer has finely tuned their small package before with the Maxim Defense PDX, and remarked at what accomplishment it is to fit 7.62×39 into a functional AR platform, and at this size to boot. Now, Maxim Defense is extending its lineup to include the MD-1505 series. Using the PDX concept as a base, the new series includes forged receivers, a slimline handguard, and different options for the back end of the firearm.

For the Full Press Release from Maxim Defense:

Maxim Defense, the premiere manufacturer in PDW technologies and stock/brace design, is proud to announce the availability of the MD-1505 series. It's a combination of the extraordinarily popular PDX design and a traditional AR-15 package. Though similar to the PDX in size and capability, the MD-1505 has MILSPEC forged receivers and different handguards. Additionally, some options include the SCW stock, SCW brace, or SCW pistol system, providing a platform that's perfect for virtually any intended use.

Maxim Defense MD-1505

The MD-1505 is Maxim Defense PDX ingenuity in a standard AR-15 package. It was engineered to bring our top-tier PDX package to an even more affordable price point.

Starting at the muzzle, each MD-1505 is equipped with the patented Maxim HATEBRAKE muzzle device. The HATEBRAKE reduces recoil, decreases flash signature, pushes gasses and concussion wave downrange away from the operator, and improves overall performance in short barrel pistols and rifles.

For increased comfort and versatility, every MD-1505 features our free-floating Slimline Handguard. These handguards provide a monolithic-like upper receiver platform and M-Slot compatibility on five sides. At the rear, the MD-1505S is equipped with our SCW Stock for the ultimate in compactness, comfort, and versatility.


  • CALIBERS 5.56 NATO, .300BLK, 7.62×39
  • BARREL LENGTH 5.5” / 139.7mm
  • MUZZLE VELOCITY 5.56 NATO, 62gr: 1965 FPS avg. .300 BLK, 115gr: 1850 FPS avg. 7.62×39, 124gr: 1675 FPS avg.
  • OVERALL LENGTH 18.75” / 476.25mm


  • MOA accurate
  • Free-floating Maxim Slimline handguard
  • Military-grade materials
  • SCW compact stock
  • Increased reliability due to included HATEBRAKE
  • Optimized for low flash signature
  • Ambidextrous magazine release
  • Ambidextrous selector


Maxim Defense MD-1505 versions

• MD-1505S:
• MD-1505SPB:
• MD-1505SPS:

The quality of the MD-1505 and its predecessors speaks for itself. This is why we say, 

“Maxim Defense: Not built for safe queens.

About Us: Maxim Defense is a development company aiming to provide the Military and First Responders the next generation of tools and equipment to succeed in today's most extreme environments. The company primarily engages in small arms manufacturing focusing R&D on producing better, lighter, and more reliable weapons and accessories. As an industrial-design-centered organization, Maxim seeks to improve and enhance existing weapons platforms alongside developing cutting-edge technologies for redefining the future. Maxim Defense is headquartered in St. Cloud, MN. To learn more, please visit and follow us on Instagram, Facebook, or Twitter @maximdefense.

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