Top 5 Best .300 Blackout Bolt Carrier Groups (BCG) Review in 2020

It’s not easy to find the best bolt carrier group (BCG) for your .300 Blackout rifle. This is because there are just too much information and a wide range of choices available on the market. The sad thing is, most of them are cheap and of low-quality.

That is why we have decided to track down the best BCGs on the market for your .300 Blackout rifle.

Introduction: What Is a BCG?

A BCG is the heart of your .300 Blackout rifle, and any other rifle. Without it, your rifle would be useless. BCGs are specifically designed to ensure that your firing patterns are as smooth as possible so your gun doesn’t always glitch and jam on you, provided that you do the reloading properly.

If your gun frequently jams or would give you a headache when you reload it, it’s probably because of the BCG. The bolt in the BCG is designed to guide the next bullet in the chamber that emerges from the magazine. A great BCG would prevent any jams as you shoot and reload your rifle.

Factors To Consider When Looking for a BCG

Price

If you are on a tighter budget, you would obviously start looking for the more affordable BCGs on the market. Although indeed, there are great BCGs on the market that come at an affordable price, price shouldn’t be your sole factor in choosing a BCG.

Material

The quality of your BCG should be the most important factor when looking for one that will last and give you less headaches. Most of the time, you would want to look for BSGs that are made from either high-quality steel or aluminum

Another thing that you would want to look for is the chrome lining found inside the BCG itself. This chrome lining was designed to prevent the BCG from rusting or corroding from the inside. If you notice that a BCG doesn’t come with a chrome lining, don’t buy it. Such a BCG won’t last you.

Installation

This should go without saying, but you would want to look for a BCG that’s as easy to install as possible. The keyword here would be ‘drop-in’. A drop-in BCG is super easy to install by yourself without the use of tools or professional services.

Top 5 Best .300 Blackout BCG Review – Explained

1. Brownells – M16 Mil-spec MP/HPT BCG

Specifications

  • Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout
  • Finish: Matte Black, Phosphate
  • Made in the USA
  • Fully assembled
  • 8620 steel and hardened

Features

The Brownells – M16 Mil-spec MP/HPT BCG is widely known as the perfect BCG for those who are on a tight budget. This BCG is a fully assembled unit that comes with the bolt itself, the bolt carrier, and the necessary pins (firing, cam, and fire retaining).

Being machined from a high-quality carpenter steel, it’s one heck of a tough material. After machining it, it has gone through a series of harsh tests to ensure that the Brownells – M16 Mil-spec MP/HPT BCG is up to Brownell’s standards.

Particularly, the Brownells – M16 Mil-spec MP/HPT BCG is all heat-treated and shot-peened to ensure that it will last you for many years to come. Because of tests like this, you won’t have to worry about durability issues with this BCG.

The bolt and the BCG are available in matte black, which was specifically designed to give the BCG a mil-spec look. In addition, the gas key is staked and comes with an extractor that includes red O-rings with springs.

If you are looking for a great BCG at an affordable price, the Brownells – M16 Mil-spec MP/HPT BCG would be one of the best choices you can make in choosing the best .300 Blackout BCG. Since Brownells is already well-known for that, you won’t go wrong in buying this.

You will like this product if:

You are on a tight budget. Everyone knows that Brownells manufacture and sell top-quality products at an affordable price, and the Brownells – M16 Mil-spec MP/HPT BCG would be no exception as it’s available only at $147.99.

You want a BCG that’s built to last. Even if it comes at an affordable price tag, you will be surprised at how this BCG fairs itself in terms of quality and performance. Besides that, it’s extremely durable thanks to the carpenter steel.

You might not like this product if:

You want a perfect BCG. Unfortunately, this BCG has a few shortcomings. Some users have complained about having a slight difficulty with moving the bolt. While some have complained about some of the pins not being secure enough.

2. Anderson Manufacturing – M16 5.56 

Specifications

  • Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout
  • Finish: Black
  • Made in the USA
  • 9310 steel bolt
  • 8620 steel carrier

Features

Next up, is the Anderson Manufacturing – M16 5.56 BCG, which is widely known to be extremely durable. The bolt is constructed of high-quality 9310 steel, while the carrier is made from 8620 steel. Just by reading the specs, you know that this BCG was built to last.

Another factor that’s really nice about the Anderson Manufacturing – M16 5.56 BCG is that it is short-peened, heat-treated, and comes with a chrome-lined interior. With that, you can expect your BCG to be corrosion and rust resistant for many years to come.

In terms of versatility, the Anderson Manufacturing – M16 5.56 BCG would perform flawlessly with most .300 Blackout rifles on the market. Besides that, if you are into mid-long range shooting, this BCG would be your best friend in preventing jamming shots.

The Anderson Manufacturing – M16 5.56 BCG is a drop-in BCG. Therefore, you can install the BCG in your .300 Blackout rifle at home anytime, instead of looking for professionals to do it for you. Anderson Manufacturing has designed this BCG to make firing your .300 Blackout rifle as simple as possible.

When it comes to visuals, the Anderson Manufacturing – M16 5.56 BCG features a matte black phosphate finish which looks great and will also match the color of your .300 Blackout rifle well. This BCG would work well in full auto mode and hence, the pin is shrouded.

If you are building your .300 Blackout rifle on an AR-15 platform with a tight budget, this BCG will never let you down and will continue to function smoothly every time on the shooting range even during unfavorable weather conditions.

You will like this product if:

You are on a tight budget. If you are building a .300 Blackout rifle on a budget, the Anderson Manufacturing – M16 5.56 BCG will still work fine without any issues even after you’ve fired a few hundred rounds.

You want a versatile and drop-in BCG. The Anderson Manufacturing – M16 5.56 BCG was designed to work with most AR-15 platforms. Therefore, you won’t have to worry about compatibility issues when building your .300 Blackout rifle.

You might not like this product if:

You don’t want to adjust the gas keys. Unfortunately, some users have complained that the gas key on this BCG may need to be restaked if such a situation was warranted.

3. 2A Armament – AR-15 BGG

Specifications

  • Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout
  • Carrier: 8620 steel, heat-treated, QPQ Nitride
  • Bolt: 9310 steel, heat-treated, MP, Cryo’d, QPQ Nitride
  • Rear body: 7075-T6, hard anodized clear
  • Extractor: machined, heat-treated, QPQ Nitride
  • Carrier key: machined, heat-treated, QPQ Nitride, staked screws
  • Regulating gate: machined from 6AL-4V Titanium
  • Weight: 7.9oz assembled
  • Requires customer supplied T-6 Torx tool for adjustment
  • Product of the great state of Idaho, MADE IN THE U.S.A.

Features

The 2A Armament – AR-15 BGG is relatively lighter than most .300 Blackout BCGs and hence, it would be adding any unnecessary weight to your gun after installing it. In terms of installation, it’s going to be a walk in the park with this BCG as it is a drop-in unit. With that, you can install it alone without having to employ the services of a gunsmith.

In terms of durability, you won’t have any issues with the 2A Armament – AR-15 BGG. This BSG has gone through pretty much every manufacturing test you can have on a BCG and has proved itself to be tough and reliable enough for your .300 Blackout rifle.

Every piece of 2A Armament – AR-15 BGG would be heat-treated, shot-peened, and machined from high quality 9310 steel. On the rear body, this BCG is constructed from top quality aircraft grade 7075-T6 aluminum that significantly improves the BCG’s durability.

If you just so happen to be looking for a gas block for your .300 Blackout rifle, you can stop searching for it now. The 2A Armament – AR-15 BGG was designed specifically to be in tune with your .300 Blackout rifle’s gas system.

Another great feature about this .300 Blackout BCG is its versatility. The 2A Armament – AR-15 BGG would be able to fit perfectly with a wide range of buffer springs, barrel lengths, and even suppressors. If you want to adjust the BCG, you can do so through the port door without having to disassemble your .300 Blackout rifle just to adjust the BCG.

You will like this product if:i

You don’t like to disassemble your rifle. What impressed most shooters is the 2A Armament – AR-15 BGG’s ability to avoid the disassembling procedure to make some minor adjustments to the BCG via the port door.

You want easy installation. Unlike some .300 Blackout BCGs that require you to employ the services of a professional gunsmith just for installing it in rifle, this BCG is a drop-in unit. This essentially means that you can do it yourself without the need of any special tools or services.

You might not like this product if:

You are on a tight budget. Although there are no doubts in terms of value and any shortcomings on the 2A Armament – AR-15 BGG, this BCG doesn’t come at a price tag that everyone can afford. If you have a tight budget, this might not be your best buy.

4. PSA 5.56 Premium Full Auto

Specifications

  • Milspec Carpenter No. 158® steel bolt
  • Shot Peened Bolt
  • High pressure tested
  • Mag particle inspected
  • Chrome Lined Carrier (AUTO)
  • Chrome Lined Gas Key
  • Gas Key Hardened to USGI Specifications
  • Gas Key Grade 8 Hardened Fasteners
  • Gas Key Staked Per Mil-Spec
  • Tool Steel Extractor
  • Extractor Spring
  • Extractor O-ring Insert

Features

Palmetto State Armory has been known to be one of America’s largest firearms retailers. With such a wide customer base, they know what you need. And for .300 Blackout BCGs, he PSA 5.56 Premium Full Auto BCG is exactly what you need to make your .300 Blackout rifle perfect.

Manufactured in the USA, you know that it is almost guaranteed to be the best in terms of quality and performance compared to an imported product. In the USA, most gun manufactures have strict guidelines throughout their manufacturing process to ensure the quality of the goods.

Being a shot-peened bolt, it means that the PSA 5.56 Premium Full Auto BCG has gone through the shot-peened test, along with a bunch of other tests to ensure it’s durability on the shooting range even for extended periods of time.

The PSA 5.56 Premium Full Auto BCG has received many compliments on its ability to handle high-pressure cartridges with ease. Besides that, the PSA 5.56 Premium Full Auto BCG also comes with a chrome-lining in its interior, which makes it rust and corrosion-resistant. #

PSA has been known to be one of the top brands in producing great firearms and accessories at affordable prices. With the PSA 5.56 Premium Full Auto BCG, it will allow your .300 Blackout rifle to fire smoothly without any jams for many years to come without breaking the bank.

You will like this product if:

You are shopping on a tight budget. Available on Palmetto at only $89.99, you will be getting one of the most durable BCGs on the market. Besides that, you can expect this BCG to be as good as mil-spec BCGs.

You might not like this product if:

You want nice finishings. Some users have complained about the PSA 5.56 Premium Full Auto BCG being a pretty basic BCG with finishings that aren’t that great. If you want something more, it will have to cost you way more than $89.99 and perhaps this BCG shouldn’t be what you’re looking for.

5. Cryptic Coatings Mystic Bronze Complete BCG

Specifications

  • Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat-treated to 60-61 RC
  • Mil-Spec Chrome Lined Carrier Interior
  • Mil-Spec Chrome Lined Gas Key
  • Key Staked with Grade 8 Screws, per Mil-Spec
  • Mil-Spec Carpenter 158® Bolt w/ Spring and Ejector
  • Tool Steel Extractor w/ Spring and Viton O-ring
  • Mil-Spec Firing Pin w/ Chrome Finish
  • Mil-Spec Cam Pin
  • Full Auto Carrier (Backward compatible with all semi-auto rifles)
  • 5.56 BCG Weight – 11.55 oz.

Features

The Cryptic Coatings Mystic Bronze Complete BCG was specifically designed for fully automatic AR-15s, M16s, and M4s. Being machined from Mil-spec 8620 aircraft quality steel along with a shrouded firing pin, you will be getting one of the toughest BCGs out there on the market.

Not to mention, if you often hunt or shoot during unfavorable weather conditions, you won’t have to worry about this with the Cryptic Coatings Mystic Bronze Complete BCG. This BCG features a Mil-Spec chrome lined interior to ensure that the BCG is corrosion and rust resistant to improve its overall longevity and prevention in gun jamming.

But perhaps, one of the greatest features of the Cryptic Coatings Mystic Bronze Complete BCG is its special coating. This is 1 out of 6 BCGs available in all kinds of high luster coatings. These coatings would work to regulate the BCG and your .300 Blackout rifle’s temperature while you shoot at high rates of fire for extended periods of time.

With the Cryptic Coatings Mystic Bronze Complete BCG, you can expect your .300 Blackout rifle to give a stellar performance as you shoot thanks to its consistent cycling function. Such a function also works well in reducing your .300 Blackout rifle’s recoil by a significant amount in addition to giving you smooth and non-jammed shots as you pull the trigger.

On top of that, the Cryptic Coatings Mystic Bronze Complete BCG has received widespread compliments in relation to its resistance against wear and tear. Some users even went as far as to say that this BCG is going to last them for many years, even reaching a decade.

You will like this product if:

You shoot at high-rates of fire. Thanks to its amazing temperature regulation features from the luster coatings, your .300 Blackout rifle will almost never overheat and jam in the middle of a heated shooting session.

You might not like this product if:

You want a black BCG. Even with all these features, some users would have still preferred a Black BCG to match with other parts of their .300 Blackout rifle better notwithstanding its amazing temperature control features.

Frequently Asked Questions (FAQ)

Q: What’s the difference between full-auto and semi-auto BCGs?

A fully automatic BCG comes with a rear lug that’s able to push the sear release in a downward direction, allowing the gun to fire in full auto or burst-fire mode. Whereas semi-auto BCGs are extra cut so it will weigh less and cost less.

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