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There are a lot of choices when it comes to buying a bolt carrier group (BCG). And with the growing popularity of nickel boron coatings, there’s an even greater number of BCGs available that have this coating. So, how do you know which is the best nickel boron BCG? That’s what we’re here to help you decide. We’ve compiled a list of the top-rated nickel boron BCGs on the market, based on our own research and customer feedback. We hope this guide helps you find the perfect BCG for your needs. Happy shopping!

Best Nickel Boron BCG

Best Nickel Boron BCG Reviews

#1 American Built Arms Company Bolt Carrier Group

American Built Arms Company Bolt Carrier Group

Specification

Finish: Nickel Boron
Caliber: 5.56x45mm NATO

The AB Arms PRO Advanced Rifle Bolt Carrier Group is specially made to have exacting tolerances and surface finishes. These Bolt Carrier Groups by American Built Arms Company are built of 8620 steel and coated in Nickel Boron with a Nickel Boron coated bore, so you’ll need nearly no lubrication. The extractor of the American Built Arms Co PRO 5.56 BCG is made from aircraft grade E4140 steel, and is coated in manganese phosphate to provide superior extraction during each fire. Drop in ready, this AB Arms NiB Bolt Carrier Group is the perfect addition to any MSR.

Pros:
  • Exacting tolerances and surface finishes.
  • Built to Mil-Spec dimensions.
  • Bolt Carrier made of 8620 Steel, Nickel Boron Coated with Nickel Boron Coated Bore.
  • M-16 Style with more mass for better functioning in semi or full auto rifles.
  • Gas Key made of 4130 Steel and Nickel Boron Coated.
  • Gas Key Screws – 4140 Steel properly staked per Mil-Spec requirements.
  • Cam Pin made of 4340 Steel, Heat treated per Mil-Spec Requirements, and Nickel Boron Coated.
  • Extractor made of Aircraft Quality E4140 Steel, Heat treated and Shot Peened per Mil-Spec Requirements.
Cons:
  • May be overpriced for some people.
  • Some shooters may not like the M16 style with more mass.

 

#2 Black Rain Ordnance Bolt Carrier Group

Black Rain Ordnance Bolt Carrier Group

Specification

Finish: NIB
Caliber: .308 Caliber
Hand: Right
Reloading Caliber: .308 Caliber

Looking for a top-of-the-line bolt carrier group for your .308 rifle? Look no further than the Black Rain Ordnance Bolt Carrier Group. This top-quality BCG is made from nickel boron, and features the Black Rain Ordnance biohazard engraving on the spine of the carrier. It’s perfect for those who want only the best for their .308 caliber rifle.

Pros:
  • Made from Nickel Boron.
  • Biohazard Engraved on Spine of Carrier.
  • It’s perfect for .308 Caliber Rifles.
  • Top-Quality BCG.
Cons:
  • May be too pricey for some.
  • .308 Caliber only.

 

#3 Black Rain Ordnance Bolt Carrier Group

Black Rain Ordnance Bolt Carrier Group

Specification

Finish: NIB
Caliber: .223 Remington, 5.56x45mm NATO
Hand: Right

This Black Rain Ordnance Bolt Carrier Group is perfect for any AR build. It features a nickel boron finish that’s smooth and easy to clean, and it’s compatible with .223 Remington and 5.56x45mm NATO rounds. Plus, the right-handed design ensures comfortable use and quick access to your ammo.

Pros:
  • Features a nickel boron finish that’s smooth and easy to clean.
  • Compatible with .223 Remington and 5.56x45mm NATO rounds.
  • Right-handed design ensures comfortable use and quick access to your ammo.
Cons:
  • May not be compatible with some firearms.

 

#4 Brownells Bolt Carrier Group

Brownells Bolt Carrier Group

Specification

Cartridge: 5.56 mm NATO
Finish: Nickel-Boron
Made in the USA
Make model: AR-15

Looking for a high-quality and affordable bolt carrier group for your AR-15 or M16? Look no further than the Brownells M16 5.56 Complete Bolt Carrier Group. This BCG is built and tested to provide flawless operation in any AR-15 or M16, and features a bolt fabricated from 9310 steel with a heat-treated and shot-peened finish. The bolt carrier itself is built using 8620 steel with a hardened finish, and the whole BCG is completed with a nickel-boron coating. Plus, the extractor features a rubber insert and spring for reliable operation, and the gas-key screws are torqued and staked for security.

Pros:
  • Steel quality assured with magnetic particle inspection.
  • Features extractor with rubber insert and spring.
  • Gas-key screws are torqued and staked.
Cons:
  • Designed for use with 5.56 NATO based cartridge cases, which may not be compatible with all cartridges.

 

#5 FailZero Bolt Carrier Group

FailZero Bolt Carrier Group

Specification

Fabric/Material: 9310 Steel
Caliber: .308 Caliber
Gun Model: AR-15
Reloading Caliber: .308 Caliber
Coating: EXO Nickel Boron

Looking to improve your rifle’s function? The FailZero Bolt Carrier Group is the answer. All essential parts are coated with EXO nickel boron, which provides a permanent dry lubricity and increased durability. Plus, the coating reduces friction to enhance performance. Installation is quick and easy – this is a drop-in part that will fit seamlessly into your firearm. Upgrade your rifle today with the FailZero Bolt Carrier Group.

Pros:
  • Durable.
  • Reduces Friction.
  • It’s easy Installation.
  • Corrosion and Wear Resistant.
Cons:
  • Coating may wear off over time.

 

#6 FosTech Outdoors AR-15 Complete Bolt Carrier Group

FosTech Outdoors AR-15 Complete Bolt Carrier Group

Specification

Gun Model: AR-15

The Echo AR-II and Echo Sport are designed to function with the standard full-auto M16 cut Nickel Boron Bolt Carrier Group. This bolt carrier group is designed to be reliable and durable, allowing you to take your shooting experience to the next level.

Pros:
  • Durable.
  • Reliable.
  • Full-auto M16 cut.
Cons:
  • May be too heavy for some rifles.

 

#7 LBE Unlimited Bolt Carrier Group

LBE Unlimited Bolt Carrier Group

Specification

Finish: Nickel Boron

This nickel boron-coated bolt carrier group is perfect for AR-15 enthusiasts who want the best performance and durability possible. The nickel boron finish provides a uniquely smooth action and exceptional resistance to wear, making this BCG ideal for high-volume shooting.

Pros:
  • Smooth action.
  • Exceptional resistance to wear.
  • Ideal for high-volume shooting.
Cons:
  • May not be as durable as other BCGs.

 

#8 XTS BCG-N Bolt Carrier Group

XTS BCG-N Bolt Carrier Group

Specification

Color: Silver
Finish: Nickel

The XTS BCG-N Bolt Carrier Group was designed to be the ideal choice for anyone in need of a high quality product. Made with long lasting and efficient components, this bolt carrier group will be useful for a long time. Created with some of the most practical materials and design, this bolt carrier group from XTS is sure to last.

Pros:
  • Machined from 8620 tool steel.
  • Forward assist serrations.
  • Shrouded firing pin.
  • Nickel boron coating inside and out.
  • Forged mil-spec gas key.
Cons:
  • May be too expensive for some buyers.
  • Not available in all colors.

 

#9 Rise Armament Bolt Carrier Group

Rise Armament Bolt Carrier Group

Specification

Unit weight: 11.6 oz.
Individually MPI tested
Bolt: 9310 MPI tested
Carrier: 8620 tool steel heat treated and case hardened
Gas key: tool steel – grade 8 hardened fasteners and staked properly
Cam pin: 4140 steel
Extractor: tool steel – shot peened

Looking for a top-quality bolt carrier group? Look no further than RISE Armament’s advanced M16 BCG with nickel boron finish. This unit is precision manufactured and individually inspected to ensure high-level performance. It’s coated with nickel boron to reduce friction and improve overall performance, ensuring a smooth, reliable shooting experience. Plus, it comes MPI tested and features a bolt made from 9310 tool steel heat treated and case hardened. Don’t miss out – order your RISE Armament Bolt Carrier Group today!

Pros:
  • Precision manufacturing.
  • Individually inspected.
  • Reduce friction.
  • Improve overall performance.
  • MPI tested.
  • Bolt made from 9310 tool steel heat treated and case hardened.
  • Carier made from 8620 tool steel heat treated and case hardened.
Cons:
  • Unit weight is a bit heavy.

 

#10 Walker Defense Research Bolt Carrier Group

Walker Defense Research Bolt Carrier Group

Specification

Finish: Nickel Boron
Fabric/Material: 9310 Steel
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington
Gun Model: M16, M4, AR-15

The Walker Defense Research nickel boron bolt carrier group is designed to provide shooters with greater reliability, easier cleaning, and better lubricity. This bolt carrier group is made to exacting quality standards and is magnetic particle inspected. The nickel boron finish provides a durable coating that reduces wear and corrosion.

Pros:
  • Made to exacting quality standards and magnetic particle inspected
  • Designed to offer the shooter greater reliability, easier cleaning, and better lubricity
  • Profile: M16 / Full Auto Style Carrier with a Properly Staked Gas Key.
  • Magnetic Particle Inspected.
Cons:
  • May not be compatible with all AR-15s.
  • Coating may wear over time.

 

#11 Walker Defense Research Titanium Bolt Carrier Group

Walker Defense Research Titanium Bolt Carrier Group

Specification

Color: Black
Finish: Ionbond (DLC)
Fabric/Material: 6Al-4V (Grade 5) Titanium, Titanium
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington
Gun Make: AR Platform
Gun Model: M16, M4, AR-15

Looking for a top-quality titanium bolt carrier group? Look no further than Walker Defense Research. The titanium bolt carrier group is made to exacting quality standards and is approximately 67% of the mass of a traditional steel full-auto profile bolt carrier group. The bolt itself features a nickel boron coating for heat dissipation, ease of cleaning, better lubricity, and enhanced reliability. Plus, this titanium bolt carrier group comes with an Ionbond DLC (Diamond Like Carbon) coating for exceptional durability.

Pros:
  • Reduced recoil.
  • Decreased split times between shots.
  • Minimized muzzle climb.
  • Approximately 33% less weight vs. steel.
  • Full Auto Style Carrier w/ Properly Staked Gas Key.
  • Carrier-only Weight (titanium): 5.7 oz.
Cons:
  • May be too lightweight for some shooters.
  • Firing pin is steel with chrome finish, which may not be as reliable as a titanium firing pin.

 

#12 WMd Guns Bolt Carrier Groups

WMd Guns Bolt Carrier Groups

Specification

Caliber: 22 Caliber (.223-.224)
Cartridge: 223 Remington
Finish: Nickel-Boron
Made in the USA
Make model: AR-15

Looking to get the most out of your AR-15? Then you need a WMD Guns bolt carrier group! This precisely machined and coated components result in a super-smooth, harder-than-chrome surface that reduces friction to the bare minimum. This means faster, cleaner shooting with less wear and tear on your rifle. Plus, the NiB-X coating is impervious to corrosion and abrasion, so your bolt carrier group will stay looking and performing great for years to come.

Pros:
  • Super-smooth, harder-than-chrome surface reduces friction.
  • NiB-X coating is impervious to corrosion and abrasion.
  • Keeps carbon from adhering, making clean up much faster and easier.
  • Made in the USA.
Cons:
  • Not available in all calibers.

 

#13 WMD Guns Bolt Carrier Groups

WMD Guns Bolt Carrier Groups

Specification

Cartridge: 5.56 mm NATO
Finish: Nickel-Boron
Made in the USA
Make model: M16

These bolt carrier groups are machined to precise government M16 specs and coated with WMD’s proprietary NiB-X® nickel boron coating. This coating creates a smooth, hard surface that is resistant to friction and corrosion. It also makes cleaning up much easier as carbon will not adhere to the surface. If you’re a competitive shooter or high-volume shooter, this is the ideal choice for you. Get your WMD Guns bolt carrier group today and enjoy the benefits of this top-of-the-line product.

Pros:
  • Machined to precise government M16 specs.
  • Coated with WMD’s proprietary NiB-X® nickel boron coating.
  • Results in a super-smooth, harder-than-chrome surface.
  • Reduced friction to the bare minimum.
  • Impervious to corrosion and abrasion.
  • Slick finish prevents carbon from adhering.
Cons:
  • May not be as durable as other bolt carrier groups.

 

#14 WMD Guns Bolt Carrier Group

WMD Guns Bolt Carrier Group

Specification

Color: Nickel
Finish: NiB-X
Fabric/Material: 9310 Steel, 8620 Alloy Steel
Gun Make: AR Platform
Gun Model: M16, AR-15
Reloading Caliber: 9mm Caliber

This bolt carrier group is perfect for anyone looking for a reliable and easy-to-clean option. The NiB-X coating guarantees that the BCG will last longer than any other on the market, and the components are polished to reduce fouling adherence. This is an especially beneficial option for those using short barrel setups or suppressed platforms.

Pros:
  • Engineered from government drawings for NiB-X nickel boron coating to provide long life, high reliability and easy cleaning and maintenance.
  • The BCG components are coated and polished to reduce fouling adherence.
  • Coating is guaranteed for life against chipping, spalling or flaking.
  • Over 30K rounds in Government protocol endurance testing did not wear the coating off.
  • Especially beneficial in short barrel setups and suppressed platforms.
  • Bolt Carpenter 158 heat-treated, shot-peened and magnetic particle inspected.
  • Extractor Manufactured, heat-treated, and hardened per government drawings.
Cons:
  • The carrier is heavier than standard M4/16 style carriers and may not function in AR15 and M4/16 platforms.

 

FAQ

Will Nickel Boron rust?

Nickel boron BCGs will not rust, as they are treated with a corrosion-resistant nickel coating. However, it is still important to keep them clean and dry, as any dirt or moisture can cause rusting.

Is a Nickel Boron BCG good?

Nickel Boron BCGs are a great choice for AR-15s and other firearms. They are durable, reliable, and easy to clean. Nickel Boron BCGs also offer reduced wear and tear on your firearm, making them a long-lasting investment.

What is the advantage of a Nickel Boron BCG?

Nickel Boron BCGs offer a number of advantages over traditional chrome-lined BCGs. The Nickel Boron coating provides superior lubricity and resistance to wear, making it easier to keep your rifle running smoothly. Additionally, the Nickel Boron coating is harder and more wear-resistant than traditional chrome-lining, meaning your BCG will last longer.

Is Nickel Boron better than chrome?

There is no simple answer to this question as both Nickel Boron and chrome BCGs have their own advantages and disadvantages. Nickel Boron BCGs are said to be smoother and more durable than chrome BCGs, and they also offer better heat dissipation. However, they can be more expensive than chrome BCGs. Chrome BCGs are known for their hardness and corrosion resistance, but they can be less durable than Nickel Boron BCGs.

Does BCG affect accuracy?

No, BCG does not affect accuracy. BCG is a bolt carrier group, and bolt carrier groups do not affect accuracy.

How hard is Nickel Boron?

Nickel boron is a alloy that is made of nickel and boron. It is a medium-hard metal with a melting point of approximately 2,600 degrees Fahrenheit. It is often used in firearms and knives because it has a high level of durability and resistance to wear.

Is black nitride better than phosphate?

Nitride coatings are harder and more wear-resistant than phosphate coatings, making them the better choice for most applications. However, phosphate coatings have a higher corrosion resistance in some environments.

What is a no hammer BCG?

No hammer BCGs are those that do not require a hammer for installation. Instead, they use a collet that tightens around the barrel and holds the BCG in place. This eliminates the need for a hammer and makes installation much simpler.

Will a 5.56 BCG work with 300 blackout?

The short answer is yes, a 5.56 BCG will work with 300 blackout, but it may not be ideal. A 300 blackout cartridge is slightly wider than a 5.56 cartridge, so the rounds may not chamber as smoothly in a rifle chambered for 5.56 rounds. Additionally, the pressure of the round may be too much for a 5.56 BCG to cycle correctly. A 300 blackout BCG is specifically designed to handle the increased pressure of the round, so it may be a better option if you are shooting 300 blackout.

Conclusion

When it comes to the best Nickel Boron BCG, there are many things to consider. The most important factor is finding a product that will meet your specific needs and requirements. In this buyer’s guide, we have outlined some of the key factors you should take into account when making your purchase decision. We also reviewed some of the top-rated products on the market so that you can make an informed decision about which one is right for you. Thanks for reading!

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