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The bolt carrier group is an important detail of your rifle that can increase the overall efficiency and performance of a weapon.

And if you are one of the gun lovers who always look for the best customization for your firearm, you should know that coating is one of the most essential parts of BCGs, for example, nickel-boron BCGs are extremely popular and useful. They ensure nice, smooth operation and allows you to aim more precisely. The only problem is that you will definitely have some complications in choosing the best model. The reason is that there are too many models on the market, and all of them have their pros and cons. To figure out what is more suitable for you, it’s necessary to spend some time researching and inspecting. We have done this for you! And now you can enjoy our top 13 nickel boron bolt carrier groups.

Bolt Carier Group Review | Best Nickel Boron BCG

ImageProductBrand
Aero Precision .308 Black NitrideAero PrecisionBUY
ODIN Works Nitride Bolt Carrier Group, BlackODIN WorksBUY
FosTech Outdoors AR-15 Complete Bolt Carrier GroupFosTechBUY
Spikes Tactical M16 Bolt Carrier GroupSpikes TacticalBUY
RISE Armament AR-15 Bolt Carrier GroupRISE ArmamentBUY
FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group, Low MassFosTech OutdoorsBUY
JP Enterprises Complete JPBC Bolt Carrier GroupBolt Carrier GroupBUY
Aero Precision AR15 5.56 Bolt Carrier GroupAero PrecisionBUY
ODIN Works Bolt CarrierODIN WorksBUY
FailZero M16/M4 Bolt Carrier Group, No HammerFailZeroBUY
TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier GroupTRYBE DefenseBUY
Ballistic Advantage .308 Bolt Carrier GroupBallistic AdvantageBUY
Alpha Shooting Sports ALPHA Premium 5.56 Nitride V2 Bolt Carrier GroupALPHABUY
FailZero AR15 Bolt Carrier Group w/ HammerFailZeroBUY
Midwest Industries 5.56/AR15 C158 Bolt Carrier GroupMidwest IndustriesBUY

#1 Aero Precision .308 BCG (Black Nitride)

Aero Precision .308 Black Nitride

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Specification
  • Material: 4130 Steel
  • Caliber: .308 Caliber

The first model we are going to review is a good but rather expensive solution for big-bore builds. This .308/7.72 BCG is made of case hardened 8620 steel, and it’s also high pressure tested and magnetic particle inspected. Thanks to high-quality coating and solid elements, you can enjoy a long-lasting and smooth experience. The carrier has forward assist serrations for better performance.

Pros:
  • Durability
  • Easy to use
  • Forward assist serrations
  • Smooth shooting experience
Cons:
  • Price

#2 ODIN Works Nitride BCG Black

ODIN Works Nitride Bolt Carrier Group, Black

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Specification
  • Material: Steel
  • Caliber: 6.5mm Grendel
  • Gun Model: AR-15

For a lower price, you can find this interesting model. A bolt carrier group made of Case Hardened 8620 Steel with nitride finish that is compatible with mil-spec uppers. An attached with Grade 8 hardware 4130 steel gas key and high pressure tested bolt together with O-ring compatible extractor and mil-spec firing pin allows you to feel what the real shooting is. So don’t miss this device if you see it on the market.

Pros:
  • Price
  • Range of features
  • Low friction
  • Compatibility
Cons:
  • Durability

#3 FosTech Outdoors AR-15 Complete BCG

FosTech Outdoors AR-15 Complete Bolt Carrier Group

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Specification

If you need a full-auto BCG compatible with Echo AR-II and the Echo Sport, this model is a good purchase. Good balance, affordable price, durable materials — this is what you want to see in a bolt carrier group for your AR-15 rifle. As always, nickel-boron coating reduces the need for lubricants and ensure corrosion resistance, so you don’t have to worry about the lifetime.

Pros:
  • Good balance
  • Durability
  • Nickel-boron finish
  • Full-auto
Cons:
  • Low on features

#4 Spikes Tactical M16 BCG

Spikes Tactical M16 Bolt Carrier Group

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Specification
  • Material: 8620 Tool Steel
  • Caliber: 5.56x45mm NATO
  • Gun Model: M16/AR 15

One more full-auto M16 BCG made of mil-spec 8620 tool steel that offers good characteristics for a quite standard but yet not cheap price. All elements are high pressure tested and MPI marked. The bolt is shot-peened, and the carrier key is firmly attached with Grade 8 hardware. The O-ring on the extractor facilitates installation and use. It’s a reliable model that is totally worth buying if you need such parameters.

Pros:
  • Durability
  • HPT and MPI
  • Shot-peened bolt
  • O-ring on the extractor
Cons:
  • Price

#5 RISE Armament AR-15 BCG

RISE Armament AR-15 Bolt Carrier Group

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Specification
  • Material: 9310 Steel, 8620 Steel
  • Caliber: 5.56x45mm NATO, .223 Remington
  • Gun Model: M16, AR-15
  • Weight: 0.82 lb

A nice, durable, and well-tested bolt carrier group for 5.56x45mm NATO, .223 Remington calibers can make you satisfied not only with decent characteristics but also with a nice price. A magnetic particle inspected bolt made of 9310 steel, a heat-treated 8620 tool steel carrier, reduced friction, and smooth operation will make your shooting experience simple and enjoyable. The gas key is staked properly, and the extractor is shot-peened.

Pros:
  • Durability
  • MPI bolt
  • Heat-treated carrier
  • Shot-panned extractor
  • Reduced friction
Cons:
  • Low on features

#6 FosTech Outdoors AR-15 Complete Lite BCG

FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group, Low Mass

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Specification
  • Gun Model: AR-15

What have we got here? This is a low-mass bolt carrier group that is designed for 5.56/.223. caliber and it has some peculiarities. First of all, it’s really lightweight, and it’s only 8.6oz. Due to such sizes, this model is not mil-spec compatible. The finish is one of the strongest advantages of the BCG. If you want to make a lightweight but solid and reliable build with no glitches and snags, it’s a perfect solution. However, it will cost you some money, so be ready for it.

Pros:
  • Durability
  • Finish
  • Low-mass design
  • Quality
Cons:
  • Price

#7 JP Enterprises Complete JPBC BCG

JP Enterprises Complete JPBC Bolt Carrier Group

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Specification
  • Material: Stainless Steel
  • Caliber: .308 Caliber
  • Gun Model: AR-10
  • Gun Frame Size: Large
  • Hand: Right

Talking about lightweight BCGs, we should mention a 9mm bolt carrier group designed by JP Enterprises. It’s one of the most reliable 9mm systems, and it features reduced stroke length, reduced bolt bounce, and a tighter firing pin channel. Thanks to these elements, the bolt carrier group is very durable but lightweight. The finish here is also good, it increases reliability and allows you to forget about the constant use of lubricants.

Pros:
  • Durability
  • Lightweight design
  • Coating
  • Reduced friction
Cons:
  • Price

#8 Aero Precision AR15 5.56 BCG

Aero Precision AR15 5.56 Bolt Carrier Group

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Specification
  • Color: Black
  • Material: 8620 Steel
  • Caliber: 5.56x45mm NATO
  • Gun Model: AR-15

In the 8th place, we have an M-16-cut bolt carrier group machined from 8620 steel and designed for 5.56x45mm NATO caliber. Despite the low price, this model has a nice range of features that any professional or amateur shooter will like. First of all, materials are solid. Besides, the BCG is shot-peened, high pressure tested, and magnetic particle tested. The gas key is firmly attached and properly staked. The extractor has an O-ring insert for easier use. In addition to this, forward assist serrations make operation smoother.

Pros:
  • Price
  • Durability
  • HPT and MPI
  • O-ring insert
  • Forward assist serration
Cons:
  • None

#9 ODIN Works BCG

ODIN Works Bolt Carrier

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Specification
  • Color: Black
  • Gun Model: M4, AR-15

Another model by ODIN that makes customers happy for a long time. There is nothing special about this bolt carrier group — it’s all about the perfect balance between the price and characteristics. Here you will find a mil-spec compatible BCG made of case-hardened 8620 steel and coated with a black nitride finish. All details are HPT tested and MPI marked, the operation is smooth and simple. Build an accurate, reliable, and cheap rifle with custom elements like this.

Pros:
  • Price
  • Durability
  • Nitride finish
  • HPT and MPI
Cons:
  • Low on features

#10 FailZero M16/M4 BCG

FailZero M16/M4 Bolt Carrier Group, No Hammer

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Specification
  • Gun Model: M16/M4

Regarding this model, it’s a cheap but great solution for 5.56/.223 calibers for M16/M4/AR15 rifles. It’s super easy to install on the majority of mil-spec uppers, and it ensures nice durability thanks to the EXO nickel-boron coating that reduces friction and corrosion. It can be a great add-on for your fire-arm, so don’t think twice if you can buy it. This will be a good buy.

Pros:
  • Price
  • Durability
  • EXO nickel-boron coating
  • Easy installation
Cons:
  • Low on features

#11 TRYBE Defense Milspec Complete 9mm Hybrid BCG

TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group

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Specification
  • Material: 8620 Steel
  • Caliber: 9mm Caliber

If you have a 9mm AR-15 carabine, this BCG is what you need. It’s suitable for Colt- and Glock-style lowers and it ensures good durability and smooth, fast operation. This model is made of 8620 steel and has a nitride finish, which means no extra friction while operating and long service life. The BCG has mil-spec dimensions.

Pros:
  • Price
  • Lightweight
  • Durability
  • Nitride finish
Cons:
  • Low on features

#12 Ballistic Advantage .308 BCG

Ballistic Advantage .308 Bolt Carrier Group

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Specification
  • Caliber: .308 Caliber

Thanks to an 8620 alloy steel carrier and a bolt made of 9310 alloy steel, this 7.62/.308 BCG BCG designed by Ballistic Advantage ensures nice performance and durability. The only downside of this model is, probably, the price because it’s not low. All the characteristics are good, and the features are useful. Except for high-quality elements, this bolt carrier group offers a properly staked gas key, a shot-peened bolt, high pressure tested and MPI marked details, Viton O-ring, and forward serrations. Those who don’t have budget limits should take a look at this model.

Pros:
  • Durability
  • Properly staked gas key
  • HPT and MPI marked elements
  • Shot-peened bolt
  • Forward serration
Cons:
  • Price

#13 Alpha Shooting Sports ALPHA Premium 5.56 Nitride V2 BCG

Alpha Shooting Sports ALPHA Premium 5.56 Nitride V2 Bolt Carrier Group

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Specification
  • Color: Black
  • Material: Steel
  • Caliber: 5.56x45mm NATO

We know you like inexpensive solutions for your custom builds. Take a look at this model because it has everything you need: an 8620-steel carrier coated with a nitride finish, improved carrier geometry, reduced friction, corrosion resistance, and so on. Although the price is not high, the quality is good. The parts are MPI marked and tested. This is a reliable solution.

Pros:
  • Price
  • Durability
  • Improved carrier geometry
  • Nitride finish
Cons:
  • Low on features

#14 FailZero AR15 BCG

FailZero AR15 Bolt Carrier Group w/ Hammer

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Specification
  • Color: Nickel
  • Gun Model: AR 15

Previously, we’ve been reviewing the same bolt carrier group but without a hammer. This model has a hammer and offers the same range of features. Basically, it’s a good, balanced, and very durable bolt carrier group that comes with a hammer. Nickel finish makes this BCG even better, ensuring smooth operation and resistance. Improve any semi-auto AR-15 rifle with a good-looking and easy-to-use BCG.

Pros:
  • Easy to use and install
  • Durability
  • Nickel finish
  • Hammer
Cons:
  • Compatibility

#15 Midwest Industries 5.56/AR15 C158 BCG

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Specification
  • Caliber: 5.56mm
  • Gun Make: AR Platform
  • Gun Model: M16, AR-15
  • Gun Type: Rifle

And the last one is a balanced bolt carrier group that offers good characteristics for a low price. The point that the manufacturer decided to use lighter materials to lower the price and improve other vital parameters. So, the bolt is made of Carpenter 158, and it’s heat-treated, shot-peened, and also MPI Tested. In the collaboration with Nickel-Boron coating, this bolt carrier group ensures awesome performance.

Pros:
  • Price
  • Heat-treated
  • Shot-peened
  • MPI marked
  • Nickel-boron coating
Cons:
  • Durability

FAQ

What is included in a bolt carrier group?
Bolt, carrier, gas key, cam pin, extractor, firing pin. Each part has its own task but they work together. Thus, the bolt and extractor, for example, are one unit but they perform two different operations: bolt locks and unlocks BCG inside the chamber, and the extractor grabs rims and helps to eject them.
Are bolt carrier groups universal?
If we are talking about the ability to interchange with other similar bolt carrier groups, then yes. You can use different BCG for one platform.
Does the bolt carrier group affect accuracy?
Accuracy mainly depends on the upper receiver, meanwhile, bolt carrier groups are in the lower receiver. But bolt carrier groups make operation smoother, allowing you to control your weapon better and aim more precisely.
What bolt carrier group does a 350 Legend use?
223/5.5 Bolt Carrier Group
What is an enhanced bolt carrier group?
It’s an improved BCG with reduced friction, carrier tilt, and wear. Thanks to the special design, these bolt carrier groups ensure great efficiency, so shooters abuse such models.

Conclusion

To underline this review, let’s point out a few best models from both low-price and high-price segments.

Price:

Cheap:

Tags: #Best #BCG #Nikel Boron #9mm #AR 15 #308 #Coating #Folowing #300 Blackout #Grendel 6.5 #Budget #Lube #Matrix #Review #For The Money #7.62×39 #5.56 #Glock #Nitride #Odin #Aero Precision

Tatiana Kursakova
Tatiana Kursakova
Professional shooter, traveller, survivalist
My love of guns is in my blood, since childhood I have spent hours enjoying the beauty of guns and adored going through their parts.

Tactical accessories are another passion of mine that I could write about endlessly - my house and garage are full of tactical gadgets, luckily my family shares my interests.

I'm infatuated with traveling that's why work at one place with a daily routine and standard schedule is not for me. I prefer copywriting and English tutoring as a freelancer. I live in a male family among constant talks about cars, guns, hunting, fishing, and, of course, dinosaurs 😊.

My husband is an obsessed hunter, and my two sons are fans of «Demolition Ranch» of YouTube blogger Matt Carriker. They are my best consultants about weapon and all-around ammunition topics. All together we share a love for adventures. Every camping or mounting hiking trip is a "small survival", giving irreplaceable experiences. Nothing can be better than the satisfaction of observing wild nature.

Motto: «Born in Ukraine, made is the USA».

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