Best 9mm Bolt Carrier Groups (BCG) of 2019 – Complete Review

If you’re looking for the best 9mm BCG, you’re in luck. Because you’re definitely going to need one if you want your 9mm to fully function to the best of its ability. A BCG is a must-have for your 9mm for reasons that are not entirely optional. Because without it, you won’t be able to use it at all.

To ensure that you find the best one, we’ve put together a list of the best 9mm BCGs that are currently on the market.

Before we get to the list itself, let’s talk about what a bolt carrier group is and what it does. We’ll also talk about what comprises a BCG along with a brief guide on how to find one for your own 9mm.

Comparison of the Best 9mm Bolt Carrier Groups

PRODUCT DETAILS
gm2-table__image

Brownells - AR-15 Brownells 9mm Bolt Carrier Group

  • Best overall 9mm BCG.
  • Made for 9mm AR-15 rifles.
  • Made from high-quality billeted steel.
View Latest Price
gm2-table__image

Faxon Firearms - AR-15 9mm Bolt Carrier Group

  • Light in weight.
  • Crafted from high-quality steel.
  • Heat-treated and battle-tested to handle the heavy-duty applications of an AR-15 9mm.
View Latest Price
gm2-table__image

Foxtrot Mike Products - FM-9 Bolt Carrier Assembly

  • Best 9mm BCG for the money.
  • Includes forward assist serrations.
  • Made from a high-quality steel alloy.
View Latest Price
gm2-table__image

J P Enterprises - AR-15/M16 9mm Bolt Carrier Group

  • Fully assembled BCG.
  • Fits Colt-style 9mm AR-15 pistols.
  • Black matte finish for added durability.
View Latest Price
gm2-table__image

Colt - AR-15/M16 9mm Bolt Carrier Group

  • Best for Colt brand AR-15 9mm pistols.
  • Works with most Colt-brand magazines.
  • Made from high-quality steel for superior durability.
View Latest Price

What is a Bolt Carrier Group? 

Strictly speaking, the bolt carrier group is considered the heart of your 9mm. In fact, it’s the heart of any firearm. Think of it as an engine for your car. Without the engine, you cannot drive the car.

Brownells - AR-15 Brownells 9mm Bolt Carrier Group

Without a BCG, you cannot fire your 9mm. Simple as that. A BCG is comprised of some key components that will work in conjunction with your 9mm’s firing ability. We will go a little deeper into what comprises a BCG in the next section.

What Are The Components of a Bolt Carrier Group?

There are nearly a dozen components that comprise a bolt carrier group. Most of these are your pins and springs that will hold it all together. Of course, we cannot forget some of the major components as well. A BCG will house some of the following key components: the bolt itself, ejector, bolt carrier, extractor, and the firing pin. 

How to Choose a 9mm Bolt Carrier Group

Knowing what to look for in a BCG is key. You’ll want to make sure that all the parts are intact and are ready for use once you’ve received them through shipping. You should also know some of the additional characteristics and aspects of each bolt carrier group so you know whether or not it needs any additional parts or if it’s simply ready to drop in and be installed. Here’s what you need to look for:

Installation

Not every AR-15 9mm owner will have expert gunsmith skills, and that we can understand. So we do our best to find the best BCGs that are easy to install and won’t need the services of a gunsmith for a proper install. All it takes is minutes and the right kind of tools. Once installed, you’ll be able to give it a test drive at the range to ensure that it’s functioning properly.

Price

Price is perhaps one of the most important aspects of a budget shopper to consider. Especially when they want something that is high in quality. As you’re looking for a BCG, find one that is the best in quality but can fit somewhere in your desired budget. Even if you’ll be spending an amount that’s high on your budget scale, it’s a lot better than buying an ineffective BCG just because of the cheap price tag.

Is Everything Intact?

If the answer is yes, then that’s your green light to consider purchasing it. You should have all the parts you need to make sure that the BCG works properly and is ready to be installed. Missing parts can cause quite a disaster (and obviously won’t allow the BCG itself to work).

Review of the Best 9mm BCGs

The following is a list of the five best 9mm BCGs currently on the market. If your AR-15 9mm rifle needs an upgrade or if you’re building one from scratch, one of these five will end up being yours to own. As you look through each one, pay attention to the features and functions.

These might end up matching your list of what to look for in a BCG. It doesn’t have to be a perfect match, but “close enough” is better than nothing. Now, let’s kick off this list by unveiling our “best overall” choice:

Pros

  • Finish is Nice and Smooth
  • Extractor is Positive and Spot-On
  • Doesn’t Add Any Additional Weight to the Rifle
  • Compatible With Most Upper and ​Lower Receivers
  • Super Durable, Especially With the Addition of the Nitride Finish

Cons

  • The Staked Key is a “Pointless” Addition
  • Some Added Weight May Interfere With it
  • Some Might Have a Challenge With the Installation

What Recent Buyers Report

Recent buyers were able to install this BCG in a matter of minutes. Once installed, they tested it at the range with their AR-15 pistols. No failures or reliability issues were reported. The firing ability was smooth and had no other issues of concern.

Why it Stands Out to Us

This BCG is probably considered the best because it is simple to install and it will get your gun to work in the quickest time possible. Aside from that, the construction is solid and everything is assembled in place. It’s a drop-in BCG that’s ready to go when you are.

Who Will Use This Most

This is as close as you’re going to get to a universal BCG. Especially if you need one to install in your AR-15 pistol. Whether you’re building it from the ground up or simply upgrading it from something else, you want a BCG that is fully functional, smooth, and reliable each time you use your pistol.

What Could Be Improved and Why

Obviously, getting rid of the staked key would be a welcome improvement. In its place should be an integral key. It may not be much of an issue, but it will make the BCG a little more reliable than most.

Bottom Line

If you’re simply looking for the best of the best when it comes to BCGs, the Brownell Brand AR-15 9mm BCG could be something that you’re looking for. All you need to do is install this in your AR-15 9mm pistol and you’ll be ready to go no matter what you’re using your pistol for.

Pros

  • Can Resist a Large Amount of Heat
  • Excellent for Most AR-15 9mm Pistols
  • Easy to Install, Takes a Matter of Minutes
  • Super Durable and Resistant to Almost Any Kind of Damage
  • Lightweight and Doesn’t Add On Any Additional Weight to the AR-15 9mm Itself

Cons

  • None

What Recent Buyers Report

A lot of recent buyers were quite happy with the BCG’s overall function and durability. Another thing they noticed was that the overall reliability was top quality. No jamming, no firing issues, just exactly how a BCG should work according to most users. Installation was easy and free of any frustrations.

Why it Stands Out to Us

This is lightweight, easy to install and remove, and battle-tested to take on whatever application you put your AR-15 9mm pistol through. We always fancy ourselves as fans of something that won’t hit the shelves unless it passes all kinds of tests with flying colors. 

Who Will Use This Most

This will be used by most AR-15 pistols users that are casual or competitive target shooters. This is designed to handle all kinds of constant gunfire. Most of the users will be shooters who will look for something that will give them the same reliability after 100+ rounds fired. 

What Could Be Improved and Why

Despite no obvious cons, one thing that we should make you aware of is despite the fact that it’s heat-treated, it might stay warm for a while after extended use. Nothing to sneeze at, but the heat dissipation might be quite slow. 

Bottom Line

If you’re looking for something solid and might be a direct threat to the Brownell’s “best overall” spot, the Faxon Firearms BCG might be your alternative choice if you’re looking for something that is strong, reliable, and works with almost any AR-15 9mm in existence.

Pros

  • Outstanding Quality
  • Flawless Functioning
  • Very Organized Assembly
  • Easy to Install Without Any Modifications
  • Reliable to Operate Even After 200+ Rounds

Cons

  • May Not Be Compatible With Some Mag Blocks
  • Installation Might Be a Challenge For Some Users
  • May Slightly Interfere With Some Lower Receivers

What Recent Buyers Report

Recent buyers were able to call this a high quality and very affordable BCG. One even went so far as to say that he got a lot more than what he paid for. Aside from the easy installation and quality construction, most users were able to fire off hundreds of rounds without a single reliability issue.

Why it Stands Out to Us

This is a BCG that is more than a budget BCG. It’s made from some high-quality steel that will definitely work to your advantage if you’re looking for something that is guaranteed to last you years or even decades. A long-lasting BCG in our opinion is more than good enough for us to choose this for our list.

Who Will Use This Most

This will be used by budget AR-15 9mm owners who want to get the best out of their pistols. So they want a BCG that is built to last them years. This way, it saves them money rather than have to go out and buy a brand new BCG in a few years time. They want something that can last them pretty much close to a lifetime. This BCG has that potential.

What Could Be Improved and Why

One of the things that might improve is making some adjustments to the size. That way, it won’t cause any issues with any AR-15 pistol lower receivers. Alternatively, it could be the pistol design itself. In that case, maybe a different BCG could be the solution.

Bottom Line

If you’re looking for a BCG that is reliable, tough all over and is affordable for most budgets then the Foxtrot Mike might be exactly what you’re looking for. Why spend more money all the time on ineffective BCGs when you can buy one and stick with it for many years? We know that a BCG like Foxtrot Mike’s won’t steer you wrong in the slightest.

Pros

  • Easy to Install
  • Super Durable
  • Fits Most 9mm AR-15 Pistols Perfectly
  • Great For Prolonged Shooting Sessions
  • Little to no Failures Through 1000 Rounds

Cons

  • Might Be a Little Pricey For Most Budgets
  • Installation Might Be Challenging For Some Users
  • Some Modifications Might Be Required For Some Pistols

What Recent Buyers Report

Most recent buyers were looking for a reliable BCG for their AR-15 pistols. Especially something that will last them for a long time. They were mostly casual target shooters or competitive shooters.

Both enjoyed the overall functionality and ability of this BCG and considered it a much better upgrade compared to their previous one. Some buyers were also building their pistols from the ground up and needed a functional BCG that was right out of the box.

Why it Stands Out to Us

This BCG is something that might have been created for the competitive shooter in mind. This was designed to handle pretty much all kinds of multiple firing episodes. For something that won’t jam even after 1000 shots, that’s quite a good sign. So it sticks out for its potential to be a long-lasting BCG, especially for the avid target shooter.

Who Will Use This Most

At risk of being repetitive, this is a target shooter’s BCG. So it will be most likely used by range shooters and competitive shooters alike. That’s because it’s strong enough to handle the impact of multiple gunshots. So it can take multiple hammer hits on a good day.

What Could Be Improved and Why

This may be modified a bit to ensure that it will work with all kinds of upper receivers. At this point, it’s compatible with most of them but not all of them. Thus some have resorted to making some modifications themselves (which might be kind of risky and could ruin the BCG if you’re not careful).

Bottom Line

The JP Enterprises AR-15/M-16 BCG might just be your best BCG that you can own if you’re planning on firing off a ton of rounds with your AR-15 pistol. A few BCGs have the potential to handle the multiple amounts of firing power. This one, in particular, might be one of them.

Pros

  • Installation is a Breeze
  • Excellent, Error-Free Reliability
  • Super Durable, Can Withstand All Kinds of Impact
  • Light in Weight, Doesn’t Add Any Additional Weight to the Pistol
  • Compatible With Most Colt-Brand AR-15 Pistols and Magazines

Cons

  • None

What Recent Buyers Report

Most recent buyers were satisfied with it overall. It fits most Colt AR-15 9mm pistols without any issues. Plus, the installation was easy and required no modification. So it has the ability to work with a good amount of upper and lower receivers. After 100 rounds, it remained reliable for most shooters. 

Why it Stands Out to Us

The Colt brand has long been appreciated by many pistol enthusiasts. And it’s also made its way into the hearts and minds of AR-15 enthusiasts everywhere. So why not make a BCG that brings a very powerful semi-automatic together with one of the most venerable brands of pistols? This BCG was made for the Colt enthusiast and that’s why we like it. 

Who Will Use This Most

This will be used mostly for target practice applications. Competitive shooting and even home defense applications are also suitable. This is made for shooters who want their Colt AR-15 pistol to last them as long as possible (so long as they take great care of it). 

What Could Be Improved and Why

This BCG has the ability to work with all kinds of charging handles. However, some charging handles may not be compatible with this BCG in particular. This might be something to be made aware of. Nothing a little testing and tweaking can’t fix.

Bottom Line

If you’re looking for a BCG that will be the perfect match for your Colt AR-15 9mm pistol, look no further than the Colt brand BCG. You won’t be disappointed once you install this puppy on your pistol and give it a spin. This is as close as you’re going to get when it comes to the best in reliability for a Colt-style pistol.

Conclusion

The best 9mm BCG is out there, and one of the five listed above might fit your AR-15 9mm pistol the best. Be sure to double check which one stands out as your ideal BCG so you can make a choice without thinking twice.

Remember, this BCG is going to stick with you for the long term. So find one that is solid in construction and reliable in use so it can last you a long time rather than not at all. 

Leave a Comment

Want Weekly Gun Deals in Your Inbox?