If you are looking for a 300 Blackout gas system for your rifle, it might take you some time to screen through all the products available on the market. In efforts of saving you some time and money, below you will find the best 300 Blackout gas systems that we’ve found.
Before that, you must first know what a gas system is, the types of gas systems, and which one would suit you best.
| Gas Systems | Name | Editor’s Comment | Rating | Get The Best Deal |
|---|---|---|---|---|
 | CMMG Pistol-Length Gas Tube | Most Recommended Option 1. most reliable in firing subsonic rounds | 10/10 | SHOP NOW |
 | Brownells – 16″ 300 Blackout Barrel & Carbine Gas System Kit | 1. Delivers excellent accuracy | 8.5/10 | SHOP NOW |
 | Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit | 1. Great for subsonic Blackout rounds 2. Accurate 3. Easy to install | 8.5/10 | SHOP NOW |
 | PSA 10.5″ Pistol-Length 300AAC Blackout 1/8 Nitride 12″ | 1. Compact rifle 2. Great for tactical uses 3. Full assembly kit included | 8.0/10 | Currently unavailable |
What 300 Blackout gas tube length should you get?
Generally, there are 2 types of gas systems widely known within the AR-15 platforms: the pistol length, and the carbine length systems.
Pistol length
Pistol length gas systems would locate just a mere 4’ away from your barrel. These gas systems can handle barrels up to 16’ in length, and are often used when chambered with subsonic .300 Blackout rounds.
Carbine length
Carbine length gas systems would locate around 7’ away from your barrel. These are usually paired with barrels that are longer than 16 inches. Many would consider them an overkill if they are used along with barrels shorter than 16’ because carbine length gas systems would cost a lot more.
Buying Consideration For A 300 Blackout Gas System
Material
When it comes to purchasing gun parts, it all boils down to the build quality. This means that you must know what materials make up the .300 Blackout gas system. High-quality materials like steel are usually used for the gas system to resist almost any type of corrosion and rusting.
Installation
You should always find a gas system that’s easy to install so you can save some money by doing it yourself and not employing the professional services of a gunsmith. As such, you would want to look for ‘drop-in’ systems. These ‘drop-in’ systems are easy to install and will require little to no special tools to install them in your rifle.
Separate parts or the entire system?
You will notice later that this article contains both the gas systems and individual parts. If you are shopping on a tight budget, you might want to avoid buying parts of a gas system separately and instead, opt for a kit that consists of everything that you need.
Top 4 Best 300 Blackout Gas Systems
1. Brownells – 16″ 300 Blackout Barrel & Carbine Gas System Kit
Specifications
- Cartridge: 300 AAC Blackout
- Contour: Socom
- Finish: Black
- Gas System Length: Carbine
- Length: 16″
- Muzzle Threads: 5/8-24
- Twist: 1-8
- Made in the USA
Features
If you are looking for a top-quality barrel and carbine gas system, the Brownells – 16″ 300 Blackout Barrel & Carbine Gas System Kit will be something you don’t want to miss. The barrel is 16’ in length so you won’t have to worry about compliant issues as most states would allow it.
By getting the Brownells – 16″ 300 Blackout Barrel & Carbine Gas System Kit, you will be killing 2 birds with one stone by getting both a barrel and a gas system. This option will save you a ton of money instead of you having to buy these 2 accessories separately.
In relation to the barrel, it comes with a twist ratio of 1:8, which is a pretty amazing barrel twist that’s able to hold a high standard of accuracy and precision for most .300 Blackout rounds. With this barrel, your .300 Blackout rifle will be able to hit targets accurately without error even in mid-long ranges.
In relation to the gas tube, it is constructed from durable materials that were specifically designed to be corrosion-resistant. In terms of the finishing, it features a nice black nitride finish so you won’t have a problem with blending it with your 300 Blackout rifle.
If you just so happen to be looking for a 300 Blackout barrel, you would want to go for the Brownells – 16″ 300 Blackout Barrel & Carbine Gas System Kit. Not only does it make things more convenient, but it will also save you a lot of time and money.
You will like this product if:
You want to save time and money. If you are looking for a .300 Blackout gas system, chances are, you are building your .300 Blackout rifle from scratch. If so, what would be better than buying a top-quality 16’ barrel and carbine gas system together at an affordable price?
You might not like this product if:
You only want a gas system. If you are looking for a gas system only, then you might have a barrel sitting around in your storeroom, which isn’t exactly ideal. That said, at such an affordable price, having a backup barrel wouldn’t be such a bad idea either.
2. Brownells – 10.5″ 300 Blackout Barrel & Pistol Length Gas System
Specifications
- Cartridge: 300 AAC Blackout
- Contour: Medium
- Finish: Black
- Gas System Length: Pistol
- Length: 10.5″
- Muzzle Threads: 5/8-24
- Twist: 1-8
- Made in the USA
Features
The main difference between the Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit and the one above is that this one comes with a barrel that’s 10.5’ long and along with that, a pistol gas system kit.
If you just so happen to be looking for a gas system and a barrel to unleash your heavier subsonic 300 Blackout rounds to its full potential, you would want to go with the Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit.
Featuring a low profile gas block and a gas tube that comes with an extremely durable matte black finish, you can expect your pistol gas system kit to withstand all sorts of corrosion and damages from unfavorable weather conditions.
As mentioned above, the barrel length is 10.5’, which is shorter than the previous product. This barrel also comes with a barrel twist of 1:8 which was designed to be compatible with a wide range of 300 Blackout rounds. If you want your 300 Blackout rifle to have amazing accuracy, then you’ve found it with the Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit.
If you love firing subsonic 300 Blackout rounds and live in a state where it is legal to own a rifle with a barrel that’s shorter than the standard 16’, then you would love the Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit.
You will like this product if:
You fire subsonic rounds. The Brownells – 10.5″ 300 Blackout Barrel & Pistol Gas System Kit has been widely known to be able to unleash the full potential of the heavier, subsonic 300 Blackout rounds like no other barrel and gas system. You’ll have to try it to believe it.
You might not like this product if:
You live in states that prohibit such gun barrels. Unfortunately, you won’t find a 10.5’ barrel to be legal in every state. So you should do your homework before making a decision. You won’t want to end up buying something illegal in your state to give yourself unnecessary troubles.
3. PSA 10.5″ Pistol-Length 300AAC Blackout 1/8 Nitride 12″
Specifications
- Barrel Length: 10.5″
- Barrel Profile: A2
- Gas System: Pistol-length
- Barrel Steel: 4150V Chrome Moly Vanadium
- Barrel Finish: Nitride
- Muzzle Thread: 5/8-24
- Chamber: 300AAC Blackout
- Twist Rate: 1:8
- Diameter at Gas Block: .750
- Gas Block Type: Low-profile
- Muzzle Device: PSA Fluted Flash Can
- Receiver Material: Forged 7075 T6 Aluminum
- Handguard Type: PSA 12″ Slant End M-Lok Rail
- Bolt Carrier Group Included: Yes
- Bolt Steel: Carpenter 158
- Bolt Carrier Profile: Full-auto
- Charging Handle Included: Yes
- Overall Length: 21″
- Build Kit: MOE+ SBA3 EPT Pistol Kit, Black
Features
Wanna know what’s better than having a great .300 Blackout rifle? Having one that’s almost half the price, but just as great! Even if you have to assemble it yourself, this kit from Palmetto would be all that you need to set up a .300 Blackout rifle.
The PSA 10.5″ Pistol-Length 300AAC Blackout 1/8 Nitride 12″ is a kit that doesn’t only come with a premium quality pistol gas system, it also comes with all the parts you need(except a lower receiver) in order for you to assemble a .300 Blackout rifle.
This kit comes with a pistol length gas system with an A2 profile barrel that features a 1:8 twist rate to accommodate for a wide range of operations. In relation to durability, you know that its upper receiver was built to last when it’s forged from aircraft-grade 7075-T6 Aluminum which is durable enough to withstand harsh weather conditions.
Besides that, this upper receiver also comes with a slanted end, and a 12-inch M-Lok handguard with rails for you to mount any accessories you’d like. The muzzle of the barrel includes a fluted cash that can be removed to reveal its 5/8-24 threads for mounting your muzzle brakes and suppressors.
This lower parts kit will come with a fixed stock, buffer tube, pistol grip, and all your other components except a .300 Blackout lower receiver for you to assemble your Blackout rifle at home, at half the price.
You will like this product if:
You are on a tight budget. Available for less than $500, you have all you need, except for a lower receiver to build a great quality .300 Blackout rifle at home, at half the cost. If you want to customize your gun, you’re free to do so too as you will be building it.
You might not like this product if:
Your state doesn’t allow shorter barrels. The PSA 10.5″ Pistol-Length 300AAC Blackout 1/8 Nitride 12″ comes with a 10.5’ barrel that is not legal in every state. To prevent from making the wrong decision, check up the gun laws on your state.
4. CMMG Pistol-Length Gas Tube
Specifications
- Gas Tube Length: Pistol
- Material: Stainless Steel
- Compatibility: AR-15
- Use: Pistol or PDW
Features
Now, if you are only for a .300 Blackout pistol length gas tube and not the entire gas system, you’re in luck, because the CMMG Pistol-Length Gas Tube is just that. This gas tube is constructed from high-quality materials to enhance the tube’s durability and longevity so you won’t be lurking around looking for another gas tube as a replacement.
The CMMG Pistol-Length Gas Tube was designed to be resistant to rust and corrosion, this is because some gas tubes aren’t as great in terms of corrosion resistance and they tend to wear down quicker. CMMG has taken note of issues like that and came up with this gas tube so that you won’t have to worry about that anymore.
Furthermore, the CMMG Pistol-Length Gas Tube is incredibly versatile as it was made to work perfectly with most pistol length gas systems in the market. Aside from that, this gas tube also comes with a gas tube pin that you can use to keep the tube in place.
Along with all its great features, the CMMG Pistol-Length Gas Tube is also easy to install. You won’t have to resort to employing the professional service of a gunsmith to install this gas tube in your gas system. After installing it, take it out to the shooting range, it is guaranteed that you will feel the difference the moment you start pulling the trigger.
You will like this product if:
You are looking for a reliable gas tube. Reliable and durable gas tubes are pretty tough to find on the market these days. Besides from worrying about its durability, you have to worry about its sometimes overwhelming pricetag too. With the CMMG Pistol-Length Gas Tube, it solves all of that for you.
You might not like this product if:
You are looking for an entire gas system. If so, then this product would not suit you as this is an individual part of a pistol-length gas system. It is best advised that you refer to the products listed above if you want the entire gas system.
Frequently Asked Questions (FAQ)
Q: Should you go for an adjustable 300 Blackout gas system?
Most shooters opt for an adjustable gas system as it will allow them to throttle down the gas that travels through their rifle. In essence, this means that you will be able to adjust the rifle’s shooting ability with just a little tweak to the gas system. By then, you can switch from burst fire to single-shot mode.
Hello there, it’s Michael here. A gun lover since young, served the country for the last 20 years. I started the blog to share my experience and gun-related knowledge accumulated throughout the years. Hopefully, you will find something useful over here or just have fun! You can learn more about me here.