The 300 Blackout is a multi-purpose, intermediate-powered rifle cartridge developed by Advanced Armament Company to exceed the ballistic performance of 5.56, especially when used in SBR rifles and AR pistols.
The 300 blackout cartridge was designed to be a replacement for the MP5SD platform. The replacement had to have more power, the same or less sound level when suppressed, and have compatibility with AR-15 platforms.
The Maxim Defense PDX chambered in 300 blackout does just that.
Best 300 Blackout AR Pistol | Maxim Defense MD-1505
The Maxim Defense 1505 is designed to handle everything from the fierce demands of Tier 1 military units to the American citizen needing a reliable weapon for home defense at a more affordable price point.
The MD-1505 dominates CQB encounters and achieves maximum terminal ballistics on target. At just 18.6" in overall length, the MD-1505 300 Blackout AR pistol delivers groundbreaking power and performance in a subcompact platform.
At the heart of the MD-1505 is the Maxim SCW brace system. This patent-pending system cuts down the length of the stock to just 4" allowing you to conceal it in almost any bag.
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The MD-1505 is also equipped with the Maxim HATEBRAKE muzzle booster. This significantly reduces recoil, decreases the flash signature, pushes gasses and concussion waves away from the shooter, and improves overall performance in short barrel pistols and rifles.
Both 300 Blackout and 556 are intermediate-class rifle cartridges designed for target shooting, hunting, and home defense. However, they both have their strengths.
The 5.56mm is half the cost of 300 Blackout, shoots flatter, and has less recoil.
The 5.56mm is also safer for use inside a building for home defense because the rounds tend to key hole, tumble, or break apart upon impact.
The 300 Blackout has a wider range of choices. 300 Blackout also displays its full potential in shorter barrels and is a much better choice for hunting.
300 Blackout also has the ability to cycle supersonic and subsonic ammunition without modification. It shows its strengths when SBR rifles and suppressors are involved as well as when barrier penetration is needed.
For a military or LE rifle that will encounter CQB work, the 300 Blackout cartridge easily outperforms the 556.
300 Blackout vs 7.62×39
The 300 Blackout approaches the power of 7.62×39 when supersonic and is optimized for use with a suppressor when loaded with heavy bullets at subsonic velocities.
From a ballistic perspective, both rounds are very similar, however, there are some benefits and drawbacks to each of these cartridges when being fired from an AR-15 platform.
The 7.62×39 cartridge has had a reputation for being a cumbersome, inaccurate round. The fact of the matter is, this reputation may very well have more to do with the way this round has been used in the AK47 platform rather than the round’s ballistic characteristics themselves.
The AK-47 is first and foremost a fighting rifle, built to run in any imaginable environment. Precision accuracy is probably not something that ever crossed the minds of Mikhail Kalashnikov or the Soviet Russian engineers. Can better accuracy be achieved from this round when fired from a custom-built AR platform rifle? Hell yes! That’s the beauty of the AR platform. Its modular design helps you put together the parts you need to achieve the performance you want.
The 7.62×39 and 300 Blackout are very similar when using similar ballistic loads. The biggest win that 300 Blackout has over 7.62×39 is flexibility, with more bullet offerings to choose from including subsonic rounds.
With factory-loaded bullet weights ranging from 78 grains to 220 grains, you can tailor your bullet selection to your needs or mission. Especially with subsonic rounds for short-barreled suppressed configurations.
Lightweight loads might extend your effective range, but at the expense of terminal energy on target. Heavier subsonic loads will carry far less kinetic energy and limit your range, but they’re optimized to shoot through a suppressor.
Bottom line is, with 300 Blackout, you have options. The thing about options is that you’re going to have to pay for them. 300 Blackout ammo is going to be more expensive than your run-of-the-mill 7.62×39 ammo. But with the recent restrictions on the import of 7.62×39, the price has been driven up making it not as cost-effective as it once was.
Best 300 Blackout Suppressor
SilencerCo Omega
The Silencerco Omega Suppressor is a suppressor that caters to 5.56 mm NATO, 300 AAC Blackout, 300 Winchester Magnum, and 7.62×39.
It is manufactured out of titanium, stainless steel, and Stellite, making it a suppressor-ready for the rigors of battle. It also comes with an included quick-release thread mount, allowing a faster and easier breakdown or swap between guns.
It features an anchor break that knocks recoil down considerably. This top-grade silencer also weighs 14 ounces and is one of the short 300 Blackout suppressors available. This means that it won’t add much length to your gun’s barrel. And according to Silencerco, this suppressor reduces sound up to 119dB when used with a 300 AAC Blackout cartridge.
The Silencer Central Banish 30 measures 9 inches when using all eight baffles, making it one of the longer 300 Blackout suppressors. But it’s also one of the lightest with an overall weight of just 13 ounces. The main advantage of this suppressor? It’s user-serviceable. It easily comes apart for cleaning in a tumbler, ultrasonic cleaner, or manually. Reassembly is a breeze due to the baffles being keyed and indexed for exact alignment.
Silencer Central says the Banish 30 comes ready to reduce the sound of a .308 by a whopping 34 decibels at minimum.
The Banish 30 also happens to be quite affordable where suppressors are concerned, retailing for $979.
If you have an SBR or AR pistol chambered in 300 Blackout, you need to feed it right?
300 Blackout is slowly becoming a more affordable round. It may be nowhere near as cheap as 556 or 7.62×39, but it remains at a competitive price when stacked up against 556 and 7.62×39.
We’ve reached out to our partners in the industry and put together some of the best 300 Blackout ammo that’s actually available to buy.
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