As far as performance, there were not any real negatives. While not impossible to get, the $200 tax stamp takes a long time to acquire (upwards of a year in some cases), requires you to pay an additional tax, and NFA weapons such as the AR 15 pistol are more heavily regulated than regular rifles. Terms and Conditions and Privacy Policy. The primary difference is that an AR 15 pistol cannot legally have a rifle stock attached to it. On a full-length rifle, that extra length and weight of a suppressor make a big difference in the handling and maneuverability of the weapon. Theres nothing exceptional going on at least not until you step inside. The H3 buffer is shorter and heavier, allowing for a slight delay when firing and aids in BCG longevity. With an AR 15 pistol, youre still not approaching the minimum rifle length of 16" when you add a suppressor. Well they were wrong. An AR 15 pistol, on the other hand, is classified differently, even though they are essentially the same thing as an SBR Rifle; ridiculous I know. Maxim Defense MD15 Rifles. All Deals; Today; Categories . 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 Its seriously small, and the next thing youll notice is exactly how fat the silencer section is. Rainier Arms on Twitter It shouldnt be a huge shock that Maxim Defense made this move. . Your email address will not be published. Editor of CONCEALMENT Magazine and Features Editor for the RECOIL Magazine Group, Dave Merrill has a particular passion for foreign weapons and concealable carbines. There are three models: the MD-1505S which comes with the SCW compact stock; the MD . $50 Back When You Buy APX A1 Carry and APX A1 Full-Size Pistols. A box of potatoes and another of onions in front of a large rapid prototyping machine belies the rural origins. Of course, you might find some cheaper used, especially Certified Used, but they still wont ever be cheap. Just received my Arid PDX Kit. I think thats the way they prefer it to be. We were surprised when we were told that 7.6239 metered at 1,900 fps; this is roughly equal to the velocity we get from our 7.75-inch Mini Draco SBR. Rainier Arms on LinkedIn Maxim Defense AR-15 Gen2 JP Silent Capture 9mm Buffer And Spring For Maxim Defen Maxim Defense AR-15 Gen2 JP Silent Capture 9mm Buf Maxim Defense PDX SPS 5.56 NATO AR-15 Pistol Black. We travel nearly an hour across dry, dusty back roads in rural Idaho. If you're looking to be a, The new 6.8x51mm cartridge adopted by the US Army. The same ammo fired from an AR 15 pistol platform clocks in at an average of 2,631 feet per second. 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 hasnt changed. Buy Maxim Defense PDX Pistol 7.62x39 Black: GunBroker is the largest seller of Semi Auto Pistols Pistols Guns & Firearms All: 970202935. . Their description says, affordable or any other permutation thereof. When reconfiguring your own build, accessories like the Maxim Defense PDW brace feature robust construction and solid attachment for reliable service on demand. Maxims director of engineering, Patrick Tramble, ran off a laundry list of both major and minor challenges they had to overcome to produce the PDX SD. Thats a long way to say wayyy overpriced and know it. All Rights Reserved, Advanced Combat Trigger (ACT) from ALG Defense, Daniel Defense vs Maxim Defense for PDW Supremacy, Both feature M-LOK on the handguards and come with included handstops, Both feature ambi charging handles. Check out ourDAILY DEALS pagefor industry deals and discounts. The PDX dominates close quarter encounters and achieves maximum energy on target. When youre looking for Maxim Defense PDX ingenuity in a standard AR-15 package. Jokingly dubbed the soup can, the silencer that sits on the SD has an outer diameter of 2.25 inches. The barrel twist rate of the PDX chambered in 5.56 is 1:7 (178mm) The preferred load for the 5.5" barrel with a 1:7 barrel twist rate is the NATO M855 62gr ball. The PDX SD was designed as a straight-out-of-the-box solution. Regardless of the extremely short length, Maxim Defense has engineered the PDX barrel to be both reliable and accurate for its users. With the SCW stock, SCW brace, and SCW pistol system options, there. Traditional Rifling: Which is Better? This is a sleek 18.75-inch semi-automatic pistol, or SBR, depending on how you want to configure it. OAL is available in both pistol and SBR configurations. Its not terribly hard though; just pop both takedown pins and pull the upper off from the front. All Rights Reserved. We'll assume you're ok with this, but you can opt-out if you wish. MD is well aware that affordable is an extremely subject term. Putting together a functional production PDW requires more than just slapjacking parts together from Brownells at least if you want to make your mark. **The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be . Manual cycling of each round. So, overall, the performance of this gun was excellent for its purposes. give me a break. The Maxim Defense PDX is an answer to the SOCOM request. Born from the SOCOM PDW solicitation, the Maxim Defense PDX U.R.G. Since the launch of the PDX back in 2019 and the setup you see here now, weve shot multiple protype iterations of the PDX SD. The stock of the PDX is the proprietary Maxim SCW stock system, which reduces the stock length to 4 inches. Rainier Arms specializes in high-end AR15 parts, AR15 accessories, AR15 grips, AR15 stocks, AR15 uppers, AR15 lowers, AR15 barrels and much more Maxim Defense M-RAX Attachment Rail - FDE, Maxim Defense PRS 6.5 Creedmoor Suppressor, Maxim Defense Ruger MKIV-SD .22lr Integral Suppressed Pistol, Maxim Defense MDX 510 7.62x39 Mil-Spec Complete Upper, Maxim Defense MDX 505 PDX 5.56 NATO SBR - 5.5" Urban Grey, Maxim Defense MDX 505 PDX SBR - 5.5" Black, Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Arid, Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Black, Maxim Defense Hate Brake Stainless DLC - Round, Maxim Defense Hate Brake Stainless DLC - Octagon, Maxim Defense MDX 508 5.56 Mil-Spec Complete Upper - 8.5", Maxim Defense M-RAX Attachment Rail - Black. If you dont want a Hate Brake you can roll with something more integral: the Maxim Defense Heartbreaker silencer. A combination of new product designs and some not-so-popular statements from the ATF have propelled these firearms into mainstream use. Best Price: $2096.48 See Deal Last Updated: 01/20/2023. Fit and finish are excellent, best of any AR platform Ive purchased. We also use third-party cookies that help us analyze and understand how you use this website. If further tweaking is needed, there are still some options. M-slot compatible handguard SHOP ALL. I was nervous because everyone told me not to go less than an 8 barrel and only in 300 blk. Maxim Defense's PDX with the SCW stock fully extended (Photo Ian D'Costa) If you're building a custom AR (including a PDW-type gun), you can buy the HATEBRAKE independent of the PDX on Maxim's . Answered by Tom B , Gear Expert, from IL, United States, on September 02, 2021. The trigger is an ALG Combat Trigger, which is a great trigger system with mil-spec internals. Its my favorite gun Ive ever owned. Theyve done this to us before with premiere products to catch our unedited reactions, first with the original PDX and later with their have-a-convo-while-shooting M240 silencer. You get the benefits of a reduced visual signature and a reduced noise signature without the unwieldy length of a full-sized rifle. Again, juice vs squeeze. This also assists in reducing recoil. Rainier Arms on Facebook This just the first taste of whats to come from Maxim Defense. The rail is slightly elevated to place sights a little higher, aiding in quick sight picture access. Click Here to get your pack of 50 Print-at-Home targets when you subscribe to the RECOIL email newsletter. Ive ordered some short barrel ammo so will update after a few hundred rounds. Timing is everything, and in this case Big Blue Smith & Wesson, gave Maxim the opportunity. more affordable. If you want the benefits of the more compact AR 15 pistol platform, there are ways to mitigate the handling and ballistics drawbacks. An AR-15 rifle with a 16-inch or longer barrel has no problem generating velocities approaching 3,000 feet per second. I will say that I think the trigger pull is lighter and the break a little cleaner on the PDX. 9.5 difference. Based in St. A precision rifle this aint, but you can reach out further if you know your holds. One major difference between the PDX SD and what wed normally call an integral is that the silencer unit itself can be removed. The PDX Kit comes with everything you need to turn your lower receiver into a Maxim Defense PDX. Dealers must buy through Distribution. M-slot compatible handguard. Maxim Defense Industries is a defense development company that develops and manufactures firearms, firearm parts, and accessories. Note: Image may not be an exact representation of the actual item. Griffin Armaments has a whole new way of looking at suppressors. That said, quality speaks for itself. Will SIG's .277 FURY really stand, NEW from Smith & Wesson comes a folding pistol caliber carbine that packs down smaller, Nighthawks don't grow on trees! Work for 2-3 hours in your spare time and get paid 1200 0n y0ur bank acc0unt every week, Get m0re inf0rmation 0n f0ll0wing site Visit Here, Wow 5.5 inch barrel?!? Skip to main content Skip to search. The AR15 at its heart is a rifle and carbine platform. Looking at the PDX, the compact size immediately draws you in. The gas block has a threaded jet port which allows for custom tuning of the gas flow. If you can pull a gas block and rotate a wrench, you can swap out gas jet yourself. Its mission is more in line with the old World War II M1 or full-auto M2 carbines. Lets discuss the benefits of owning and using this platform. The Hate Brake also pumps some gas pressure back into the system, something thats important for functionality when were talking about such short weapons. The PDX employs a CQG grip from Reptilia. 9am-6pm CST Tue-Fri, 2023 Omaha Outdoors, LLC. Both performed flawlessly in the PDX. Rainier Arms on Google The very first shot felt too light, like a misfire of a rifle that didnt properly cycle. Unlike the lies you tell to potential partners, this one is indeed smaller than it looks. It may be a knock for some people that the gun only ships with a single magazine, but at least its a steel mag. The Hatebrake muzzle brake from Maxim does an incredible job of pushing gas downrange, but more on that in a minute. It is an excellent firearm for the price and, above all else, the PDX fits a very unique space and practical purpose in any safe. The PDX's gas system is adjustable/tunable at the armorer level. That worry was dashed with another pull of the trigger, followed by the splash of steel downrange. It also mitigates the felt recoil. All Rights Reserved. and what you get Related Article How To Buy a Suppressor | The New ATF eForms Form 4. Since you can readily find them for around $25, it seems like a great upgrade. This provides easier access to the safety control. Cloud, MN, this firearm firm designs and builds top tier weapons including Recoil Magazines 2019 Best of Shot, Maxim Defense PDX, which features a 5.5-inch barrel and performance that dominates in close quarter battle. While the preproduction models have receivers unmarked and unmarred by caliber markings, production guns will have the caliber deeply etched right on top of the forward assist. Need Help?service@guns.comCall (866)582-4867, PO Box 1131 13800 Nicollet Blvd Burnsville, MN 55337 2023Guns.com. POD-209275, Home Magazine Issue 41 Review: The Maxim Defense PDX, This article originally appeared in RECOILIssue 41. Maxim Defense SBA 5.56 NATO Ammo 62 Grain TUI Lead Maxim Defense SBA .300 AAC Blackout Ammunition 20 Round Box 115 Grain TUI Projec Maxim Defense SBA .300 AAC Blackout Ammunition 20 Maxim Defense MD9 CPS 9mm Luger AR-15 Pistol Black, Maxim Defense MD9 CPS 9mm Luger AR-15 Pistol Arid, Maxim Defense MD9 CPS 9mm Luger AR-15 Pistol Gray, Maxim Defense MD11 AR Pattern 308 Win Semi Auto Rifle. Training with this gun is essential, but that should go without saying. This PDX uses a direct gas impingement system and operates on a set of very familiar AR-15 style controls. . At just 18.75" in overall length, the PDX delivers groundbreaking power and performance . If there is one stone to throw at them, its the price, with both of them commanding an MSRP of over $2,200. Youd almost certainly end up with less muzzle flash and concussion (not to say itd be light) and youd certainly end up with better powder use. Those who will immediately react negatively to the MSRP, know this: Maxim Defense has never sacrificed quality for a reduction in cost. 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. By signing up you agree to Guns.com's The handstop is also different on each gun. Something to keep in mind is that you cant shotgun the Maxim Defense PDX open like a normal carbine due to the particular buffer/BCG combination. But having experienced previous PDX SD prototypes, the thought didnt even cross the mind. LENGTH: 14 inch upper 4 inch SCW stock (collapsed) While it's true that the gun accepts all standard AR-magazines it only ships with a single 20-round magazine, so that has been listed as the standard capacity for the gun. The aluminum handguard is compatible with M-LOK accessories but is also designed to accept the proprietary Maxim M-Rax Picatinny rail, which is spring-loaded piece that assists with placement. Press Release: Rosco Manufacturing Barrels now in Battle Arms Development Rifles, H&K adds the VP .40 to their striker fired pistol line. Born from the SOCOM PDW solicitation, the Maxim Defense PDX is designed to dominate close quarter encounters and achieve maximum energy on target. Penny start and no reserve! ALL RIGHTS RESERVED. Optimized Personal Defense Weapon kit Seriously. What makes us still classify the Maxim Defense PDX SD as an integral is that the silencer was specifically designed for the gun, and the gun specifically for the silencer theyre a system and need to work together in order to work at all. Settings Maxim Defense PDX 5.56 NATO - FDE remove SCCY, CPX-2, Double Action Only, Compact, 9MM, 3.1"Barrel, Polymer Frame, Duo-Tone Finish, Red Dot Sight, No Manual Safety, 10Rd, 2 Magazines WARNING remove GSG-16 Carbine 22 LR w/ Faux Suppressor remove CP33 .22 LR remove SAINT VICTOR SBR 5.56 AR-15 RIFLE remove Glocks N' Roses Glock 43 remove; Image This patent-pending design cuts down the length of the stock to 4 and offers an integrated BCG with interchangeable buffer weights to give you the flexibility to maximize performance and versatility without sacrificing functionality or form. This is an ultra-compact system. $2,299.00 (Save up to 10%) Price. Maxim Defense Industries, PDX, Semi-automatic SBR, 300 Blackout, 5.5" Barrel, Flat Dark Earth (Arid) Finish, Maxim Defense Hatebrake, SCW Stock System, ALG Combat Trigger, 20Rd Choose Options Quick view This is a sleek 18.75-inch semi-automatic pistol, or SBR, depending on how you want to configure it. Otherwise this thing hasnt missed a beat. The latest to be announced is the Maxim Defense MD-1505 which the company announced as having the Maxim Defense PDX ingenuity in a standard AR-15 package and bringing it to a more affordable price point that those looking for the PDX design can settle for. Not because it works better with a suppressor, but because the additional length of the suppressor body has less of an impact on overall length. Root: Striking Down New Yorks Gun Control Laws Would Be a Victory For Criminal Justice Reform, Fall Hunting Safety Tip: Feral Hogs and Other Wild Game Animals Can Carry DiseaseAct Accordingly, Federal Judge Grants Injunction Blocking Enforcement of ATFs Frame or Receiver Rule, Defendant Agrees Appeals Court Should Uphold Injunction Blocking New Yorks Law Banning Carrying Guns in Sensitive Places, Smith & Wesson Announces the New M&P FPC Pistol Caliber Carbine. Maxim Defense PDX 5.56 NATO 20+1 Round Semi Auto AR Pistol, Black - MXM47803. HK height rail for a more rigid upper receiver All rights reserved. It gives them room to interpret the law as they please. But when compared to the patented grip from Daniel Defense, its not even close. Subscribe to our email list and get exclusive access to promotions, sales events and more! That said, Im not a regular AR shooter. WEIGHT: 5 lbs ***10mm with Glawk mags has entered the chat***. Your email address will not be published. If you choose to own an AR 15 pistol, get up to speed with the legalities of adding certain accessories that are common on rifles. Insofar as the PDW-stock scene is concerned, what was once a crowded and competitive market has been largely dominated by Maxim Defense. Grab your favorite hiking bag, throw your PDX in, and get exploring! With lessons learned from the development of their MSX-240 suppressor that withstands the rigors of a full-auto 7.62x51mm belt-fed, along with further design insights stemming from their DSX silencer line, last year at CANCON 2022 Maxim Defense finally showed off their latest: the PDX SD. You can unsubscribe at anytime. I shoot enough of them every year, but Id rather be on the pistol range. The MD-1505 was engineered to bring our top-tier PDX package to an even more affordable price point. At just 18.75" in overall length, the PDX delivers groundbreaking power and performance in a . That said, quality speaks for itself. Remember, this pistol was designed for CQB situations, which are within a few yards. This just the first taste of what's to come from Maxim Defense. The total unloaded weight is just under 5.7 pounds with its 7075-billet aluminum lower receiver. Inside, more than a dozen 3D printers are churning and buzzing away on new parts and prototypes. Be it hot ammo or suppression. SDS Imports 1911A1, Metal Frame Pistol, Full Size 9mm, 5" Barrel, Steel, Black, Fixed Sights, Manual Thumb Safety, 9rd . My first reaction was a mix of goosebumps and exclaiming, Holy sh*t!. Remember, at least half of flash produced has a direct correlation with ammunition selection and of course, the only thing consistent about Russian ammunition is inconsistency. CALIBER: 5.56, 7.6239, .300BLK While the handguard of the PDX has integral sling quick-disconnect points, its also compatible with Maxim M-Rax accessories as well as M-Lok so you arent stuck to one location. An AR 15 pistol allows you to legally carry a more capable weapon loaded and at the ready within a vehicle. Your favorite AR trigger will also work, though since the PDX ships with a Geissele SSA-E as standard, we doubt youll want to be playing with that anytime soon. Caribou Media West, LLC Speaking with the reps, they said part of the requirement for this gun was that it shoot . The Maxim Defense PDX, which is now chambered in .300BLK, 5.56 NATO, and 7.6239, had its genesis in USSOCOM. Finally! Born from the SOCOM PDW solicitation, the Maxim Defense PDX is designed to handle the fierce demands of the Tier 1 community. According to the National Firearms Act (NFA), a rifle has to have a minimum barrel length of 16 inches, or it is considered an NFA weapon and requires a $200 tax stamp in order to own legally. Full specifications of the COVID-19 Maxim Defense PDX Pistol below: Born from the SOCOM PDW solicitation, the Maxim Defense PDX is designed to handle the fierce demands of the Tier 1 community. Maxim Defense has officially jumped from the PDW stock market to the PDW market itself. Maxim Defenses MD-1505: A PDX Done AR-15 (ish), Though similar to the PDX in size and capability, the PDX has a MILSPEC forged receiver and a different handguard. We took their new, Some of the less common but still awesome CCWs! Fuggedaboutit. This trigger has a very crisp pull and a positive and short reset. come on Admittedly the Hate Brake was far better in the 5.56 version of the PDX than the 7.6239. Maxim Defense PDX SPS 7.62x39mm Semi Auto Pistol 5.5" Barrel 20 Rounds M-LOK Fre. We quickly noticed the soft recoil from this very short-barrel pistol. Speaking of the handguards, you can use HK 416 compatible ones and vice-versa. Maxim Defense SBA 5.56 NATO Ammo 20 Rounds 55 Grai Maxim Defense MD11 AR Pattern 6.5 Creedmoor Semi Auto Rifle. I put about 200-250 rounds through each of these guns, and Im happy to report neither gun had a single malfunction not that I was expecting one from either. Sure, you can play mucky muck with different buffer weights, but you dont have to. Triple-so when its in short-barreled format. As low as. Washington I didnt push past 25 yards or do any sort of accuracy testing because I dont really see that as a use case for either gun. They are both a ton of fun to shoot at the range, so you cant go wrong with either of these choices. New for 2019. Compare specifications of Maxim Defense PDX 223/5.56 MXM47803 and Maxim Defense SPS 505 PDX 223/5.56 MXM-50802. Per the manufacturer: The Maxim Defense PDX U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. Maxim Defense SBA 7.62x39mm Ammunition 20 Round Bo Maxim Defense SBA 5.56 NATO Ammo 62 Grain TUI Lead Free. At 100 yards, the PDW . Firstly, bear in mind that were using some preproduction guns, so therell be some relatively minor changes between what graces these pages and what you buy in the store; well point these out as we go along. (Photo: Seth Rodgers/Guns.com). This website uses cookies to improve your experience while you navigate through the website. Maxim Defense PDX 5.56 NATO 20+1 Round Semi Auto AR Pistol, Black - MXM47803. it should be prettier CMG West, LLC This all adds up to more options than were willing to kick out in this article and more options is more better for consumers. Systems this small have been attempted before, but . 5R Rifling vs. Systems this small have been attempted before, but, importantly, the Maxim Defense PDX actually worked. It dominates close quarter encounters and achieves maximum energy on target. Weve reported in the past that the U.S. Military is taking steps toward an all-suppressed army, and theyre starting with SOCOM. These cookies will be stored in your browser only with your consent. OAL is available in both pistol and SBR configurations. We were shooting both PMC .223 Remington 55-grain FMJ-BT and PMC 5.56mm 55-grain FMJ-BT. Today a Maxim Defense Pdx will cost you an average of $2153.44 which is $87.94 lower than the 12-week average price. Additionally, instead of having to use a carbine tool or some sort of thread locker to secure the short receiver extension, a simple 38-inch ratchet is used to torque everything down via a convenient socket hole on the butt. If you're itching for a great 9mm 1911 that won't, Used by millions of sport shooters around the world, the Strelok Ballistic app won't be, 220gr 300 Blackout Ammo from Atlanta Arms, New: Mechanix Fingerless Covert Tactical Glove, Become More Stable With Area 419's New RailChanger X, Maxim Defense PDX SD: Short, Silent, & Soft Shooting [Review], Suppressors: RECOIL Magazines Complete Guide To Buying, Maintaining, And Shooting With A Silencer. The .300 AAC Blackout caused a little more muzzle flip, but it wasn't too bad. Maxim Defense AR-15 CQB Stock With JP Gen 2 Silent Capture Spring 9mm Aluminum D Maxim Defense AR-15 CQB Stock With JP Gen 2 Silent Maxim Defense Industries AR-15 CQB Stock With Heavy Buffer And Spring Dark Earth Maxim Defense Industries AR-15 CQB Stock With Heav Maxim Defense JP Silent Captured Spring Heavy Buffer Only for Maxim Defense CQB Maxim Defense JP Silent Captured Spring Heavy Buff Maxim Defense CCS Stock Gen 6 for AR-15 Rifles Matte Black Finish. There are some other smaller differences that are at play when comparing these two guns. One of the platforms leading the pack in this niche is the Maxim Defense PDX. It's a small, easy to handle AR-pattern firearm that uses either Maxim's superb PDW brace in the pistol model or a collapsible stock when sold as a short-barrel rifle. If I bought a PDX, I would certainly make this upgrade. A 38-inch ratchet is all you need to crank this down. Thats a velocity "loss" of about 250 feet per second. Regardless of the extremely short length, Maxim Defense has engineered the PDX barrel to be both reliable and accurate for its users. The Hatebrake simply works to dispel gas down range and keep you on target. When it comes to a gun thats stubby and stashable while also chambered in a rifle caliber, the clandestine capability also comes with an awful lot of bang. Though similar to the PDX in size and capability, the PDX has a MILSPEC forged receiver and a different handguard. Firstly, the upper receiver of the PDW is contoured to allow for a reduced width between the stock rods, and importantly, it brings the rods slightly higher, relative to the receiver itself. The PDX also utilizes the Maxim Defense SCW Stock system, which limits stock length to 4 (4 inches), and overall (OA) weapon lengh to 18.75 (18.75 inches), when fully collapsed. Maxim Defense SPS 505 PDX 5.56 NATO, 5.5" Barrel, Urban Gray, M-LOK, Hatebrake, ALG Combat Trigger, SCW Pistol System, 20rd . Maxim Defense Pdx 505-sps. The contoured upper receiver reduces the width between the stock rods as well as allowing the rods to be positioned higher on the receiver. Guns Listing ID: 382623. Seriously, word play with phrases that mean the same thing in context then trying to pretend like they are somehow different. Popping plates at various ranges was effortless. Maxim Defense Industries firearms, firearm parts, and accessories for sale online. The ballistics of 5.56 between those barrel lengths is significant to say the least. Second place is now a long way away. Meet the Maxim PDX pistol. We started with Mk1, then Mk2, and Mk-god-only-knows before you see whats here today. Of course, their first rifle falls directly inline with what we know about Maxim Defense: The PDX PDW; one short enough even the classically stubby armed T-Rex can finally use. Maxim Defense MD11 AR Pattern 6.5 Creedmoor Semi A Maxim Defense MD15 SPS 5.56 NATO AR-15 Pistol. Maxim Defense MXM-47922. When it comes to pistol-braced, PDW-style firearms, two of the undisputed names at the top are Maxim Defense, with itsPDX, and Daniel Defense, with its DDM4 PDW. DR Exclusive Video: HK416C (also written HK 416C) "Ultra Compact Assault Rifle" SBR/PDW (Short Barreled Rifle/Personal Defense Weapon) Fired on Full-Auto at NDIA Infantry Small . Overall, though, the gun handled very well and still proved to be a ton of fun when just slinging lead. All of which improve overall performance in short barrel pistols and rifles. The PDX-SD is said to be designed around the suppressor, which is hearing-safe when firing M855, reading 138 dB during testing. All of which improve overall performance in short barrel pistols and rifles. We shouldve known the PDX SD would be special when the folks at Maxim broke out their cellphone cameras as we picked it up at the range.