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What is AR-15 BCG? 👀
AR-15 BCG stands for AR-15 bolt carrier group. It is an important part of AR-15 rifles as it contains the components necessary to load and fire ammunition in the platform. It includes:
- ⚙️ bolt;
- ⚙️ firing pin;
- ⚙️ cam pin;
- ⚙️ gas key;
- ⚙️ firing pin retaining pin.
When shopping for AR-15 BCGs, there are several features to keep in mind. The most common features include:
- ⭕️ Bolt Carrier Group Design ➔ it traditionally features either “standard” or “lightweight” designs with each having its own attributes and tradeoffs.
- ⭕️ Coating ➔ vary significantly from product to product ranging from hard chrome/nitride finishes to various lubricity coatings.
- ⭕️ Bolt Assembly ➔ most BCG have qualitative and complete bolt assemblies made of 9310 steel, however, some manufacturers offer options with better materials such as Carpenter 158 or C158 and S7 tool steel.
- ⭕️ Extractor Components ➔ include the extractor spring, extractor pin, and O ring.
|💣 The major benefit of an AR-15 BCG is its ability to reliably cycle rounds ⟹ meaning it can feed from magazines and extract spent casings from chambers efficiently and accurately.|
|💣 It also features an improved design compared to other mil-spec ARs.|
|💣 These BCGs are built with enhanced materials for higher quality performance and better longevity than standard AR components.|
|💣 It also features an enhanced surface finish ⟹ which increases the overall lubricity of BCGs, reducing friction between the bolt and carrier while also providing a smoother operation.|
|💣 AR-15 BCGs are designed for multiple configurations, as well as for use in various AR platform calibers. This makes them versatile and can help ensure that your AR runs reliably no matter what configuration or caliber you are using.|
How to choose the best AR-15 BCG? 💡
When looking for the best AR-15 BCG on the market there are a few things you should consider.
1️⃣ The material used should be strong and durable;
- 🔹 Generally speaking, steel is preferred but other materials like aluminum can also be used depending on your budget and preferences.
2️⃣ Additionally, look at any coatings or finishes that have been applied to increase corrosion resistance and ensure reliability over time.
3️⃣ The BCG should also be compatible with your platform and caliber;
- 🔹 For example, you wouldn’t want a .223 AR-15 BCG for a 7.62 AR-15 rifle as the two calibers require different bolt carrier groups. Be sure to double-check compatibility before purchasing to ensure proper function in your rifle.
4️⃣ Finally, consider any extra features that may come with certain BCGs such as:
- 🔹chrome-lined or nitride finishes;
- 🔹lightweight designs;
- 🔹extended latch systems.
🎥 Watch the video to learn more:
Top 24 🚀 AR-15 BCG Reviews
1# 2A Armament AR15 Regulated Bolt Carrier Group
If you’re searching for a top-quality, lightweight solution for your AR-15’s gas system, then you need the 2A Armament AR15 Regulated Bolt Carrier Group. This drop-in carrier has a gas regulating gate built right into the carrier itself, so you can adjust it from fully open to fully closed. There’s no need for an adjustable gas block with this carrier group – it’s all taken care of. The carrier is made from high-quality steel and QPQ Nitride for extreme durability and smooth operation. It’s also heat treated for even more strength and reliability.
2# Aero Precision Grendel Bolt Carrier Group
If you’re in the market for a quality bolt carrier group (BCG) for your AR platform rifle, consider the Aero Precision 6.5 Grendel Bolt Carrier Group in Black Nitride. These BCGs are made from steel and feature an M16-cut design, making them compatible with a wide range of AR setups. They’re also treated with a black nitride finish, which means they won’t require as much cleaning or lubrication as untreated bolts. Whether you’re building a new AR or just want to upgrade your existing one, the Aero Precision 6.5 Grendel Bolt Carrier Group is a great option to consider.
3# Angstadt Arms AR-15 9MM Bolt Carrier Group
The Angstadt Arms AR-15 9MM Bolt Carrier Group is a reliable choice for your AR-15 build. This black nitride-finished carrier group is compatible for use with 9mm AR-15 lower receivers and features a removable weight for use with the Law Tactical folding stock adapter. The durable alloy steel construction and steel bolt ensure long-lasting performance, while the small parts are standard for the AR9 platform and easy to service.
4# FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group
FosTech Outdoors understands that when it comes to your AR-15, you want only the best parts and accessories. That’s why they offer this top-quality Lite Bolt Carrier Group. It’s designed to function perfectly with any standard full-auto AR-15 rifle and is constructed out of tough and durable nickel boron. This material ensures excellent quality and performance for your rifle. In addition, the finish is designed to reduce friction and resist wear, so you can be confident this bolt carrier group will last for many years of use.
5# Stern Defense SD BU45 ACP Bolt Carrier
The Stern Defense SD BU45 ACP Bolt Carrier is a high-quality bolt designed for use with Mil-Spec and Glock-pattern upper receivers. It is made from AISI steel and features a Melonite finish for durability and a propriety center and roll pins for added strength. The bolt also incorporates a new bolt design that caters to single-stage triggers with short resets.
6# RISE Armament AR-15 Bolt Carrier Group
Introducing the RISE Armament Rifle Bolt Carrier Group. These bolt carrier groups are designed to reduce friction and increase the smoothness of each shot, thanks to high-quality steel parts and a heat-treated carrier. They’re also individually MPI tested for quality, so you can be confident in their overall performance.
7# Radian Weapons Enhanced Black Bolt Carrier Group
The Radian Weapons Enhanced AR15/M16 Bolt Carrier Group was expertly designed to minimize carrier tilt while also reducing overall friction. These features, along with the grade 8 hardware and black nitride finish, make the Radian Weapons Bolt Carrier Group the pinnacle of performance, reliability, and durability – so choose a great new addition to your rifle.
8# Aero Precision AR15 5.56 Bolt Carrier Group
The Aero Precision AR15 5.56 Bolt Carrier Group is a high-quality BCG that is perfect for your AR15 build. It is made from steel and has an M16-cut carrier. The carrier has forward assist serrations and the gas key is properly staked. The bolt is made from Carpenter tool steel and is shot peened and HPT tested/MPI marked. The extractor has a black o-ring insert. This BCG is way above mil-spec and perfect for those who want only the best for their AR15 build.
9# Aero Precision 5.56 AR15 Bolt Carrier Group
Changing out your BCG is one of the easiest ways to improve your AR15, and Aero Precision’s quality is second to none. This Bolt Carrier Group is constructed from tool steel, with a steel bolt, and features a shot-peened finish and magnetic particle inspection for durability. The carrier itself features forward assist serrations, and the entire unit meets military specifications for performance.
10# Stern Defense SD BU9 9mm Bolt Carrier
Presenting the Stern Defense SD BU9 9mm Bolt Carrier. These Bolt Carrier Groups from Stern Defense are built with AISI steel with a melonite finish to reduce friction and increase reliability. The Stern Defense Glock Pattern 9mm Bolt Carrier fits Mil-Spec and Glock-pattern upper receivers, and it’s compatible with Glock magazines and standard AR15/M16 charging handles. Pick up this 9mm BCG for your AR or Glock firearm today!
11# TRYBE Defense Milspec Complete Bolt Carrier Group
If you need the best Bolt Carrier Groups on the market, check out the Trybe Defense. This fully assembled Bolt Carrier Group includes the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin. Every bolt is high pressure tested (HPT) and magnetic particle inspected (MPI) before making its way to loyal customers. The M16 Nickel Boron Bolt Carrier Group is machined from ultra-durable and corrosion-resistant steel and hardened to mil-spec conditions to provide you with years of reliable service.
12# Failzero Fail Zero Bolt Carrier Group Bushmaster
The Failzero Fail Zero Bolt Carrier Group Bushmaster is one of the best AR-based solutions for shooters who demand reliable, high-performance reliability from their firearm. This .450-caliber bolt carrier group reliably cycles .450-caliber ammunition without fail or damage, and is purpose-built and built to last. Get the shooting gear you need to be at the top of your game with FailZero.
13# Walker Defense Research Titanium Bolt Carrier Group
Pay attention to the Walker Defense Research Titanium Bolt Carrier Group. Made from Grade 5 titanium, this BCG is approximately 67% of the mass of a traditional steel full-auto profile BCG, while still offering exceptional durability. The bolt itself is coated in nickel boron for heat dissipation, ease of cleaning, better lubricity, and enhanced reliability. It’s an excellent addition for a lightweight build or use in competition shooting.
14# Angstadt Arms Angstadt Bolt Carrier Group
The Angstadt Arms Angstadt Bolt Carrier Group is a top-quality, reliable BCG that is built to last. It features a strong steel case and an exposed gas hole that allow for easy maintenance and longer bolt life. The Black Nitride coating provides extra protection to the parts and allows for faster heat removal when necessary. The tapered nose and large window allow for easy and thorough cleaning of the Bolt Carrier Group.
15# Battle Arms Development Titanium Bolt Carrier Group
Searching for a top-quality bolt carrier group that won’t weigh you down? Notice the Battle Arms Development Titanium Bolt Carrier Group. Made from aircraft-grade titanium, this carrier is extremely durable and corrosion-resistant. It’s been treated with a special surface coating for even more protection against wear and tear. The bolt is made from high-strength steel, while the gas key is billet construction and torqued/staked for security. Get the Battle Arms Development Titanium Bolt Carrier Group and enjoy the enhanced performance without sacrificing weight or durability.
16# Phase 5 Tactical Complete Bolt Carrier Group
Presenting the Phase 5 Tactical Complete Bolt Carrier Group. This high-quality BCG is perfect for any AR-15 owner, whether you’re a first-time builder or a seasoned pro. The Phase 5 Mil-spec AR15 bolt carrier features a heat-treated and chrome-lined inner with a black phosphate coating. The complete bolt carrier group includes a cam pin, firing pin, gas key, and bolt. All bolts are HPT/MPI tested, so you can be sure of their quality and durability.
17# Sons Of Liberty Gun Works Bolt Carrier Group
The Sons of Liberty Gunworks Bolt Carrier Group includes a bolt made from Carpenter Technology No. 158 steel, which is heat-treated to military specifications and shot-peened for durability. The carrier is machined from AISI alloy steel and features a hardened gas key and properly staked screws. The entire assembly is then full-auto-test fired to ensure reliable performance. Get the Sons of Liberty Gunworks Bolt Carrier Group and rest assured you’ve got a top-notch component in your gun.
18# 2A Armament Bolt Carrier Group Lightweight Adjustable
Do you need an adjustable bolt carrier group for your AR-15? Look at the 2A Armament Regulated Bolt Carrier! This innovative carrier features a gas regulating gate built into the carrier itself, eliminating the need for adjustable gas blocks. This allows you to tune your firearm’s gas system for optimum performance with different buffers, springs, suppressors, and barrel lengths. The RBC is fully adjustable through the port door and does not require the firearm to be broken down for adjustment.
19# Odin Works Inc. AR-15 Bolt Carrier Group
If you want to buy an AR-15 bolt carrier group that doesn’t require loads of lubricant, the ODIN Works AR-15 Bolt Carrier Group is a great option. Each bolt carrier group is treated with a black-nitride finish, which provides a low-friction surface that doesn’t require as much lube to run properly. The bolt carrier group is also designed for use with traditional AR cartridges that share the 5.56 NATO case head.
20# Forward Controls Design Llc Bolt Carrier Group
The SBCG from Forward Controls Design LLC has been designed specifically for slick side uppers and uppers without a forward assist and offers superb ergonomics and performance. To ensure optimum performance, the SBCG uses OCKS (Optimized Carrier Key Screws), which are designed to offer superior holding power compared to conventional screws. So if you’re looking for a high-quality, reliable bolt carrier group that will offer unbeatable performance, the SBCG from Forward Controls Design LLC is a perfect choice.
21# Wilson Combat AR-15 Bolt Carrier Assembly
Searching for one of the best AR-15 bolt carrier assemblies on the market, pay attention to the Wilson Combat bolt carrier assembly. This precision-machined Bolt is made from Carpenter No. 158 steel and is shot-peened for increased strength. It also includes a tool steel extractor and ejector, an appropriate extractor spring, and MPI (Magnetic Particle Inspected) and HPT (High Pressure Tested). If you need a top-quality bolt carrier assembly for your AR-15, please note the Wilson Combat bolt carrier assembly.
22# Brownells AR-15 Bolt Carrier Group
Each Brownells AR-15 Bolt Carrier Group features a bolt machined from high-strength tool steel and a carrier machined from hardened steel. Both of these components, as well as every other part in the BCG, are finished in a durable nitride coating. The bolt is also magnetic-particle inspected for quality assurance. Plus, the gas key is torqued and staked for added security. So you can rest assured that this BCG will provide years of dependable service.
23# Faxon Firearms Lightweight Bolt Carrier Complete
Are you need a bolt carrier group that is strong and durable, but also lightweight? Check out the Faxon Firearms Lightweight Bolt Carrier Complete. This bolt carrier group is made from MIL-SPEC materials and finishes, or better, so you can be confident in its quality. It is also compatible with dust covers and maintains the full-auto trip sear for full-auto and the new multi-stage trigger functionality. This bolt carrier group looks amazing and is perfect for your next build. Order yours today!
24# J P Enterprises Full Mass Bolt Carrier Assembly
Notice the J P Enterprises Full Mass Bolt Carrier Assembly. This custom, stainless steel bolt carrier features a 100% increase in bearing surface for smooth cycling and outstanding reliability. Includes forward assist serration and dust cover notch for tactical duty or any application requiring absolute “no-fail” operation. Five-step QPQ process produces an exceptionally hard, wear-resistant high-lubricity black finish. So if you want a high-quality, durable bolt carrier assembly that will provide years of reliable service, pay attention to the J P Enterprises Full Mass Bolt Carrier Assembly.
How to Install an AR-15 BCG? 🔧
🔎 AR-15 BCGs are relatively easy to install if you have the right tools and know a few basic steps. Here we’ll cover how to properly install an AR-15 Bolt Carrier Group (BCG).
- Punches 🔩
- Hammer 🔨
- AR armorer’s wrench 🔧
- AR upper receiver block or vice block ⛏
📌 Step 1: Remove any existing BCG from the upper receiver. If there is no existing BCG, go to Step 2.
- To do this, remove takedown/pivot pins and separate the upper receiver from the lower receiver. Place the upper receiver block or vise block into the upper receiver to secure it in place.
📌 Step 2: Clean up any build-up inside the AR’s upper receiver with a solvent and punch so that your BCG can move freely when installed.
📌 Step 3: Insert your BCG into the upper receiver, making sure that everything is aligned correctly.
- Use an armorer’s wrench if needed for proper fitment.
📌 Step 4: Securely attach your BCG by fastening the takedown/pivot pins into place.
- Hammer lightly if necessary to make sure they are flush with the upper receiver.
📌 Step 5: Once your BCG is installed, test-fire it in a safe environment to make sure everything is working properly.
🎥 Watch the video to follow the process:
Good luck! And happy shooting!🤠
Choosing the best AR15 BCG can be a daunting task. With so many options on the market, it’s hard to know which one will work best for your needs. In this article, we’ve outlined some of the most popular and provided product reviews to help you make an informed decision. We’ve also included tips on how to choose the right BCG for your needs. We hope this information was useful for you. ❤️ 🔥
Tags: #best ar15 bcg / #best bcg for ar15 / #ar15 best bcg / #ar15 bcg best / #bcg ar15 best
I’ve just purchased one of these to fit an assembled Aero upper that I also ordered. Let’s discover if it lives up to the hype! To make sure, I have a couple of thousand rounds on hand and ready for this new combination from Aero. I’ll share the results with you later)))))
Cryptic Coatings boast Bolt Carrier Groups (BCGs) that are vastly superior to Nickel Boron BCGs. I own four FailZero BCGs and a WMD, yet Cryptic Coatings remain top-of-the-line – no tarnishing like FailZero, WMD, or any other nickel boron counterparts!
I’ve never seen a Fail Zero tarnish, they only get dirty.
Based on my personal experience and expert opinions, I would like to suggest that the Palmetto State Armory Fathers of Freedom BCG made by Microbes for $100 is the best affordable option. Please note that this recommendation only applies to the Fathers of Freedom BCG and not any other options offered by the manufacturer.
As I am new to the world of higher-tier AR15s, I would like to inquire about the potential differences between the Sonics BCG and the NP3. Are they the same, or is there a distinction between the two that I should be aware of?
No, the Sonics BCG and the NP3 are not the same.
⚫️ The Sonics AR-15 BCG is made of high-grade steel and features a black nitride finish for increased durability and corrosion resistance. It’s engineered with an improved bolt geometry to reduce drag on parts during cycling, which helps increase reliability.
⚪️ On the other hand, NP3 AR-15 BCGs are designed from stainless steel and feature a nickel Teflon coating for superior protection against wear and tear. This coating also makes it resistant to various solvents, oils, and cleaning products without affecting performance in any way.
I would like to know what the most reliable and trustworthy bolt carrier group is that can withstand any possible challenge without faltering. In other words, what is the absolute best option available?
According to experts, and from my experience, LMT and KAC are the top-performing options for bolt carrier groups in terms of reliability. However, it is advisable to purchase several bolt carrier groups from reliable brands such as DD, BCM, SIONICS, RADIAN, or AERO as backups.
I suggest considering the LMT E-Bolt installed in a KAC Sandcutter or a full chrome KAC E3.
Colt and BCM are excellent options. However, if you want to overspend, LMT and KAC are also available.
In terms of quality of life, the SIONICS NP3 and the Microbest Chrome BCGs are the only bolt carrier groups I am interested in purchasing. Since I shoot short barrel suppressed guns, I don’t anticipate the need for an LMT BCG and therefore do not find it worth the cost.
I am confused about the distinction between bolt carrier groups from various brands, such as BCM or SOLGW. It is unclear how they differ from each other or from brands like Aero or FN, since they are not manufacturing their own. Is it possible that people are just drawn to the brand name on the side of the BCG?
🔔 When it comes to purchasing bolt carrier groups, the price point may reflect the level of quality control (QC) or testing that the product has undergone.
📢 Some companies may include upgraded extractor springs and inserts in their BCGs, which may also affect the price. ➕ Additionally, some manufacturers may not conduct both HPT and MPI testing, while others may only perform MPI testing, which may not be sufficient.
As someone who personally owns and frequently uses bolt carrier groups, I highly recommend the products from Sionics, Colt, SOLGW, BCM, and Centurion Arms. However, I cannot speak for other brands since I have no experience using their products.