The M4E1 300 Blackout Upper is available in 8", 10", and 16" barrel configurations.Ī 10-inch barrel on an AR pistol or SBR rifle is perfect for the ballistics of 300 Blackout. Aero Precision 300 Blackout UpperĪero Precision is one of the best companies in the industry for modern, high-quality AR-15 rifle builds and AR-15 parts. The PDX Kit comes with everything you need to turn your lower receiver into a Maxim Defense PDX. Military tested Rapid Deploying PDW stock.LENGTH: 14 inch upper 4 inch SCW stock (collapsed).The PDX Kit uses a Direct Impingement system. This patent-pending device significantly reduces recoil, decreases the flash signature, pushes gasses and concussion waves downrange away from the operator improving overall execution. The PDX KIT is also equipped with Maxim’s HATEBRAKE Muzzle Booster. 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. is the ultimate choice for when concealment and personal defense is non-negotiable.Īt the heart of the PDX KIT is our Maxim SCW system. Related Article – What Set’s Maxim Defense Apart From Other Firearm Manufacturers? Maxim Defense PDX Upper KitĪt just 14" in overall length, the PDX U.R.G. With the PDX U.R.G, you dominate close-quarter encounters and achieve maximum energy on target without sacrificing accuracy at distance. Maxim Mil-Spec BCG or PDX/SCW compatible BCG.HK height rail for a more rigid upper receiver.HATEBRAKE installed under the handguard.FINISH: Arid Earth and Black in color Type-III Hard Anodizing.This patent-pending device significantly reduces recoil, decreases the flash signature, and pushes gasses and concussion waves downrange away from the operator improving overall execution. is also equipped with Maxim’s HATEBRAKE Muzzle Booster. The Maxim Defense PDX U.R.G is built to handle the fierce demands of the Tier 1 community and is designed to install on any Mil-Spec lower receiver. Now that you’re ready to make the move, let’s cover some of the best 300 Blackout Uppers available to buy. The 300 Blackout round also reaches peak ballistic performance put of a 9-inch barrel whereas the 5.56 requires a 20-inch barrel to reach peak ballistic performance. The 220-grain round is much easier to suppress, and much quieter when suppressed. The 110-grain rounds are supersonic whereas the 220-grain rounds are subsonic. Keep it simple stupid.īesides the easy conversion from 5.56 to 300 Blackout, the 300 Blackout round does outperform the 5.56 in a few areas.įirst, the 300 Blackout is a very versatile bullet with weights ranging from 110 grains to 220 grains. No ATF paperwork and no professional gunsmithing. This adaptability makes it possible to convert your 5.56 AR-15 into a 300 Blackout with nothing more than a swap of the upper receiver. The AR-15 chambered in 300 Blackout vastly outperforms the 5.56 NATO in this matter. To be effective, you need a hard-hitting, compact, and quiet gun that will own 0 to 300 yards. 300 Blackout is the result of what current conflicts have taught us about the modern battlefield and urban gunfights. Those parts include the magazines, bolt carrier groups, lower receivers, buffer tubes, and stocks. That compatibility is in large part due to the design of the 300 Blackout upper being able to be used with standard 5.56 AR15 parts. The 300 Blackout has become one of the most popular rounds in the industry due to its direct compatibility with existing AR-15 rifles.
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