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What is a BCG? 🤔
It is a critical component of any AR-style rifle. It is responsible for the movement of the firing pin, chambering and extracting rounds, and maintaining the proper operating temperature of your firearm.
Components of the Bolt Carrier Group 💡
The BCG typically consists of four main components:
- 🚀 the bolt
- 🚀 bolt carrier
- 🚀 cam pin
- 🚀 firing pin retainer pins.
The bolt itself contains several lugs that fit inside grooves cut into the barrel extension. As pressure builds up in the chamber when a round is fired, these lugs expand and keep the round locked in place until enough pressure has been relieved before extraction begins.
Types of BCG’s Finishes 🔥
🔰 Phosphate coating is the most common type of finish. This provides superior lubricity and protection from wear and the elements. Generally speaking, phosphate coatings tend to be more affordable than some other coatings available on the market.
🔰Nickel boron (NiB) coating is another popular choice. It has increased heat dissipation qualities which make it ideal for high-volume shooting sessions. Unfortunately, a NiB will cost significantly more than one with a phosphate coating or other cheaper finishes on the market.
🔰Hard chrome coatings are among the toughest finishes available on today’s market. This type of finishing offers excellent corrosion protection and wear resistance while also providing superior heat dissipation capabilities in comparison to other options available on the market today.
🔰 Titanium Nitride (TiN) finish is an attractive and durable coating. It has a golden colour that gives it an eye-catching appearance, as well as provides protection from corrosion and wears. The coating is comprised of nanoparticles made up of titanium and nitrogen atoms, which have been bonded together through a chemical process.
Watch this video to find more information 💻
Best 💣 BCG Review
1# TRYBE Defense Mil-Spec AR-15 Hybrid Complete Bolt Carrier Group
The TRYBE Defense Mil-Spec AR-15 Hybrid Complete Bolt Carrier Group is the perfect choice for 9mm AR-15 Carbines. Fully assembled and ready to install, this BCG includes the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin. Machined from ultra-durable and corrosion-resistant steel, nitride QPQ-treated, and hardened to mil-spec conditions to provide you with years of reliable service, this Bolt Carrier Group is sure to satisfy even the most ardent and exacting operator. Get the TRYBE Defense Mil-Spec AR-15 Hybrid Complete Bolt Carrier Group now and be confident in your weapon’s performance.
2# JP Enterprises Complete JPBC Bolt Carrier Group
For the competition rifle that demands the best, the JP Enterprises Complete JPBC Bolt Carrier Group is a perfect choice. Featuring the Low Mass Operating System (LMOS), this bolt carrier group offers a significant reduction in felt impulse compared to other models on the market. This means that your rifle will move less during cycling, allowing for faster sight recovery and follow-up shots. The reliability of the LMOS components is excellent, making this bolt carrier group perfect for competition or sporting use.
3# Radical Firearms M16 BCG Bolt Carrier Group 762MEL-BCG
When you want to buy a bolt carrier group that can handle the big stuff, you need the Radical Firearms M16 BCG Bolt Carrier Group 762MEL-BCG. The steel bolt and steel carrier are treated with a Melonite finish for superior durability, and the whole unit is designed to fit mil-spec parts. Whether you’re looking to build a hard-hitting rifle for competition or self-defense, this bolt carrier group has what you need to get the job done right.
4# Lantac Enhanced Full Auto Style Bolt Carrier Group
Searching for an enhanced bolt carrier group for your auto rifle? Look at the Lantac Auto E-BCG. This BCG is precision machined from high-quality steel and coated with NiB electroless nickel boron with advanced UCT EXO. This provides ultimate lubricity for a smoother operation. The Lantac Full Auto Bolt Carrier Group has a unique shape with forward porting that allows the upper receiver to run with less pressurization and cooler and cleaner with a flatter energy pulse.
5# Aero Precision AR15 Bolt Carrier Group
Aero Precision AR15 Bolt Carrier Group is one of the highest-rated and most popular on the market. The gas key and extractor spring meet military specifications (mil-spec), and the carrier features machined forward assist serrations. It is available in a variety of finishes like phosphate, nitride, and nickel boron, all of which are polished for a sleek look. Trust that your rifle is in good hands with an Aero Precision AR15 Bolt Carrier Group.
6# FosTech Outdoors AR-15 Complete Bolt Carrier Group
Do you need a top-quality bolt carrier group for your AR-15? Then check out the FosTech Outdoors AR-15 Complete Bolt Carrier Group. This bolt carrier group is built to last and will provide reliable performance shot after shot. The nickel boron finish not only looks great, but it also protects against corrosion and makes cleaning a breeze. If you’re searching for a top-of-the-line bolt carrier group for your AR-15, then look at the FosTech Outdoors AR-15 Complete Bolt Carrier Group.
7# JP Enterprises Complete Bolt Carrier Group
Introducing the JP Enterprises’ FMOS carrier design. Made from stainless steel, it’s built to withstand the most demanding conditions. The JPBC-2 features all the strengths of a Mil-spec carrier. It’s also heavier than a standard .308 carrier, making it ideal for rifles that need more mass regulation. With extended forward assist serrations and a dust cover notch, FMOS carriers offer 100% increased bearing surface for smoother operation and improved alignment. When you demand the best, choose JP Enterprises.
8# WMD Guns Bolt Carrier Group
Searching for a top-quality, durable bolt carrier group (BCG)? Pay attention to the WMD Guns Bolt Carrier Group. This BCG is specifically engineered 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. The coating is guaranteed for life against chipping, spalling, or flaking. Especially beneficial in short barrel setups and suppressed platforms.
9# Griffin Armament Enhanced Mil-Spec Bolt Carrier Group
The Griffin Armament Enhanced Mil-Spec Bolt Carrier Group is the best choice for your AR-15. These BCGs are the best Mil-Spec pattern there are, combining a carrier, bolt, cam pin, and extractor. All the proper heat treats, the correct shot peen, and the often neglected post-heat-treated grind are present. In a market filled with cast component BCGs, all components are billet machined and all surfaces receive a finish pass in machining for improved surface smoothness.
10# American Built Arms Company PRO 5.56 Bolt Carrier Group
Presenting the American Built Arms Company PRO 5.56 Bolt Carrier Group. This BCG is made from steel and coated in nickel boron for a smooth, consistent operation with minimal lubrication required. The extractor is made from aircraft-grade steel and Manganese phosphate coated for superior extraction. Drop-in ready, this BCG is the perfect addition to any MSR.
11# RISE Armament AR-15 Bolt Carrier Group
If you want to buy a high-quality Bolt Carrier Group for your AR-15 or M16 rifle, pay attention to the RISE Armament AR-15/M-16 BCG. This BCG is made from high-quality steel parts and features a heat-treated carrier and a Grade 8 hardened gas key. It’s also individually MPI tested to ensure the highest level of quality and performance. So if you’re looking for an upgrade that will improve the overall performance of your rifle, choose the RISE Armament AR-15/M-16 BCG.
12# Foxtrot Mike Products Mike-9 Bolt Carrier Assembly
The Foxtrot Mike Products Mike-9 Bolt Carrier Assembly is a high-quality, reliable assembly that is excellent for your AR-15 pistol. The one-piece design ensures superb reliability, while the salt bath nitride finish gives both lubricity and wear resistance. The Mike-9 Bolt Carrier is also “ramped” to accommodate both standard GI and dedicated 9mm hammers. With ISO:9001 and AS:9100 quality certifications, you can be sure that this product is of the highest quality.
13# Bravo Company M16 5.56 Bolt Carrier Group
The Bravo Company M16 5.56 Bolt Carrier Group is a high-quality, durable BCG. It is fully assembled and features a parkerized exterior and chrome-lined inside carrier. This BCG also features the correct Mil-Spec Carpenter No. 158 steel bolt assembly that has been shot-peened for increased strength. It includes a tool steel machined extractor and ejector, BCM Extractor Spring, HPT (High Pressure Tested), and MPI (Magnetic Particle Inspected).
14# Rubber City Armory M16 Bolt Carrier Group
Do you need a bolt carrier group that provides durability and wear resistance? Look at the Rubber City Armory Titanium Bolt Carrier Group. This BCG is machined from titanium and features a proprietary aerospace nitride coating, which makes it perfect for use in even the most demanding environments. The steel bolt is 1bth strong and reliable, while the billet gas key is properly staked and torqued for optimal performance. Whether you want to upgrade your current rifle or build a new one from scratch, the Rubber City Armory Titanium Bolt Carrier Group should be at the top of your list.
How to Clean BCG? 🎯
🟥 1. Disassemble the BCG
You should first remove the bolt carrier group from the firearm before attempting to take it apart. Once separated from the firearm, you can use a set of punches to remove any pins that are holding components together. Be sure to keep track of each pin’s location as you go along so that reassembly is easier later on.
🟥 2. Clean all components
Once disassembled, you will want to clean each piece individually using lubricant cleaner or mineral spirits to get rid of any dirt and debris that has built up over time. After cleaning off each component with a brush or cloth, be sure to dry them off completely.
🟥 3. Lubricate all components
Using lubricant oil or grease, lubricate each piece separately in order for it to operate smoothly during use. This includes applying a thin coat of lubricant on rails and moving parts such as extractors and firing pins for optimal performance after reassembly is complete.
🟥 4. Reassemble bolt carrier group
Remember those pins located in Step 1? You’ll now need to place them back into their slots so that they can be put back together correctly once again. Be sure not to miss any pieces during this process.
🟥 5. Test your bolt carrier group
Now that your Best BCG has been successfully cleaned and lubricated, it is time to see if everything works properly by testing out its functions within an unloaded gun.
Please watch this video to learn more information 📺
BCG is a great choice for anyone looking for an affordable and quality weapon accessory. They have different types and coating and can be used for a variety of purposes, including self-defence, hunting, and target shooting. We have found and introduced to you a list of the best items to help make your purchase decision easier and hope that this information will help you. Thanks for reading!😉
I am about to embark on my first build and I am having difficulty choosing the right bolt carrier group. I plan on building an AR-15 in 5.56, and my use will be limited by my abilities rather than the rifle’s capabilities. I am torn between WMD, Aero, and Lantec. My budget for this purchase is not more than $300.
Please, check the list of items in the article above ☝. We can assure you that it will provide several options as you requested
I have a great performing and visually appealing polished bolt carrier group Trybed. I have no issues with it and it operates seamlessly with both my 3mr trigger and my Fostech Echo Sport. The action is smooth when lubricated and cleaning is made easy due to its polished finish. The price is reasonable and I am overall very satisfied with this product.
I have JP carrier. I am thoroughly impressed with this carrier as it is the lightest one I have ever used. The build quality, finish, color, and overall appearance are flawless, as is typical of JP products. I have paired this carrier with a JP billet upper and a Noveske “Navy” 9″ barrel in 300BLK. I have not had the opportunity to put it to the test yet. However, in my experience so far, I have found that using a stock AR trigger assembly may cause the hammer to strike the front of the opening in the carrier, resulting in cracking or breaking of the finish. This issue does not occur when using a slimmer or reduced-weight hammer, as found in drop-in or aftermarket trigger upgrades. I plan on using this carrier in future builds where weight is a concern.
+1 to JP. I am extremely pleased with the smooth performance of this recycled bolt carrier group. I have paired it with a budget-friendly Bear Creek 7.5 barrel and the accuracy is impressive, with great recoil. This product is a showcase piece, with a perfect polished finish that makes cleaning a breeze and saves time. The reduced friction also helps to protect the upper receiver.
I purchased the Lantac BCG specifically for my full-time suppressed rifle because it directs excess gas forward instead of straight out. Although the BCG is a bit pricey, I can assure you that it is worth every penny. The build quality is top-notch, everything is in perfect specification, and it makes shooting my suppressed firearm much more enjoyable. I plan on buying several more of these BCGs for my other rifles in the future.
GM what’s the difference between nickel boron and black nit?
The main difference between nickel boron and black nitride BCGs is the finish.
🟩 Nickel boron BCGs have a bright silver-coloured finish, while black nitride BCGs have a protective layer of black oxide that improves wear resistance.
🟩 Nickel boron BCGs are more corrosion-resistant than black nitrided BCGs and can be used in wet conditions without damaging the BCG’s surface.
🟩 Black nitrided BCGs are slightly less expensive than nickel boron BCG. Still, their wear resistance is lower and they cannot be used in wet or humid environments due to their susceptibility to rusting.
I highly recommend AO Precision for their high-quality, mil-spec bolts. They offer excellent HPT, MPI, and tight fit and finish with sturdy staking, all at a reasonable price of around $80 to $90. I own four mil-spec bolts and one nitride bolt from them and all of them perform flawlessly.
Aero is known for being a great option at an affordable price. I have never come across any negative feedback about Aero to date.
Have a question. Should you lube your bolt carrier group?
🔴 Lubing your BCG (Bolt Carrier Group) is a critical step in maintaining the health and longevity of your firearm.
🔴It ensures that the parts are well lubricated to reduce friction, which can help keep them from seizing up or wearing out faster.
🔴 The proper lubrication also helps to ensure that all parts move smoothly
Is chrome bolt carrier group better than nickel boron?
🟨 Chrome BCGs can offer a great look that many people find attractive. They also provide better resistance to heat than other BCGs and are known for their reliability when used in harsh environments. The downside is that they require more maintenance as they need to be periodically oiled or greased in order to keep them working efficiently. Additionally, as they are made from steel, they are heavier than other BCG options and can add more weight to your rifle set-up.
🟨 On the other hand, nickel boron BCGs offer some compelling benefits over chrome BCGs. They are much easier to clean due to their slick surface which helps prevent dirt or debris from sticking or adhering. Nickel boron BCGs also have increased lubricity compared to chrome BCGs due to their low friction coating which can help improve cycling efficiency and reduce wear on moving parts within the bolt carrier group. Furthermore, nickel boron BCGs weigh less than their steel counterparts making them an ideal choice if you’re looking for something lightweight but still durable enough for use in harsh environments or extended shooting sessions at the range.