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The PDX from Maxim Defense has proven to be an extraordinarily popular design, but it has  never been on the lower end of the firearm price point scale. They have now launched the new “MD-1505” to offer a more affordable AR-15-style PDX.

Though similar to the PDX in size and capability, the PDX has a MILSPEC forged receiver and a different handguard. With the SCW stock, SCW brace, and SCW pistol system options, there should now be a version available for most conceivable needs.


Maxim Defense advises . . .

When you’re looking for Maxim Defense PDX ingenuity in a standard AR-15 package, the MD-1505 is your answer. The MD-1505 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, which reduces recoil, decreases flash signature, pushes gasses, and concussion wave downrange away from the operator. All of which improve overall performance in short barrel pistols and rifles.

Maxim Defense Hatebrake

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.



  • 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


  • 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


MD-1505 Models

» MD-1505S «

» MD-1505SPB «

» MD-1505SPS «


MD-1505 Affordability

MD is well aware that “affordable” is an extremely subject term. Those who will immediately react negatively to the MSRP, know this: Maxim Defense has never sacrificed quality for a reduction in cost. Their description says more affordable, not “easily affordable” or any other permutation thereof. In the specific case of the MD-1505 vs. PDS, it is more affordable. That said, quality speaks for itself. The price point will not be for everyone.

Maxim Defense: Not built for safe queens. 

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  1. Never been impressed with Maxim Defense products. Some of their stuff is kind of OK, but I can do better for quality, price, and fit/function with other products.

  2. The short barreled 5.56es like that always made me chuckle. If you take their numbers and plug them in it’s like shooting a .357 Magnum with factory ammo at the muzzle. The powder burn rate for the barrel length has to be so slow it is dumping vast amounts out the muzzle. It’s an exemplary case for 300 Black admittedly.

    350 Legend would be a fun caliber add in this now that I’ve said it.

      • Indeed something like that would be another option but I don’t know that you’d be able to do it in a gas operated semi auto. That’s more delayed blow back, roller locked or even straight blow back territory. You’d almost certainly end up with less muzzle flash and concussion (not to say it’d be light) and you’d certainly end up with better powder use. I’d think 5.56 would have a slightly better BC but don’t know that it’d make a ton of difference at range.

        Certainly would be unlikely to want to shoot any of the above indoors with out earpro.

      • ***Steyr AUG NATO w/3x Swarovski optic and 60rd Magpul GenM3 drum mags has entered the chat***
        MSRP only a few 100s more then this, and INCLUDES the 3x Swarovski “donut of death” optic. 🤔

        • 10″ longer OAL would make this the same length as an AUG so I don’t know that I”d put these in the same ballpark. You could have something like this with a 16″ barrel and the same OAL. You’d also have a gun that’s not strictly RH too. A Tavor would reduce that down to 8″ longer and it seems as if you can get that down to 5″ difference with an SBRed version.

          Then again the need for an 18.5″ OAL rifle like this seems nichey. Something like you’d see carried by guys in black suits around important people who wanted to tuck it into a jacket or brief case.

        • 9.5″ difference.
          When the stock is extended (appears to be around 5″) this is about 4.5″ shorter then a 16″ barrel AUG.
          With a 5.5″ barrel vs the AUG 16″ barrel, most will be wondering if the juice is worth the squeeze.

          The ballistics of 5.56 between those barrel lengths is significant to say the least. Again, juice vs squeeze.

  3. “MD is well aware that “affordable” is an extremely subject term. Those who will immediately react negatively to the MSRP, know this: Maxim Defense has never sacrificed quality for a reduction in cost. Their description says more affordable, not “easily affordable” or any other permutation thereof.”

    That’s a long way to say wayyy overpriced and know it. Seriously, word play with phrases that mean the same thing in context then trying to pretend like they are somehow different. The market is flooded with “more affordable, not easily affordable”, there is not one category of it you can not get for less at the same or better quality and perform just as well or better.

  4. I always thought maxim defense have some great looking guns and it is nice to see the price point reduced with the new line. However I think price point is less of an issue for people and the real issue is MD saying using a suppressor voids the warranty, if that stance still remains. I was hoping they beefed up their system enough with this new line to fix that problem but the fact that the news release says “Increased reliability due to included HATEBRAKE” I am guessing that hasn’t changed. So it’s going to be a hard pass for me.

    • Good point.
      This is one of the reasons I gravitate toward piston driven rifles with adjustable gas plugs. Just dial it down when back pressure increases. Be it “hot” ammo or suppression. The “off” position even allows for operation like a bolt gun. Manual cycling of each round.
      Cleaner, cooler, no smoke cloud blown back/near shooter with each round……

  5. for that kind of cash
    and what you get
    and what little you can do with it
    it should be prettier
    it should at least have a cnc billet upper and lower
    they dont cost that much anymore
    17 design billet lowers from primary arms are nice for 75 bucks
    spartan billet lowers from jbo are even nicer for 125
    bear creek arsenal has billet 8.5 inch pistol complete uppers with mlok rail and nitrided bcg for 225 that run like a top and are 10 inch steel plate accurate at 300 yards with tula and a red dot
    theres no way maxim defense has anywhere near 1000 bucks in any of these things
    and theyre selling them for 1800
    come on
    give me a break

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