June, 15

Top 5 Best Bolts for AR-15: Find Your Perfect Match Now!

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Looking for the best bolt for AR 15? You're in the right place. The AR 15 is a top-performing rifle that requires high-quality components to function at its best. The bolt is one of those essential parts that must be reliable, durable and precise to ensure your rifle performs well every time you use it.

With so many options available on the market today, finding the perfect bolt for your AR 15 can quickly become overwhelming. That's why we've put together this comprehensive guide to help you navigate through all the different choices and find exactly what you need.

Whether you're a seasoned shooter or just starting with an AR-15, choosing quality components such as bolts will make all the difference in terms of performance and longevity. So, read on as we explore some of our top picks for the best bolts available on today's market!

Best Bolt for AR-15: Find the Perfect Match for Your Rifle


The AR-15 is a reliable and popular rifle that can be used in various applications, from hunting to self-defense. However, its performance heavily depends on the quality of its components. The bolt is one of the most critical parts of an AR-15, responsible for locking and unlocking the barrel during firing. Choosing the best bolt for your AR-15 can significantly improve its accuracy, reliability, and longevity.

In this article, we'll explore some of the top-rated bolts available on today's market and help you find one that suits your needs perfectly.

Criteria for Choosing a Quality Bolt

Before we dive into our list of recommendations let's review what criteria are necessary to consider when shopping around:

  1. Material – A good bolt should be made from high-quality materials like Carpenter 158 steel or 9310 steel.
  2. Coating – The coating should protect against corrosion while also being non-reactive with other materials.
  3. Machining – Precision workmanship is crucial as any errors here will affect functionality greatly.
  4. Extractor Design – A well-designed extractor improves extraction rates by providing more surface area contact & ensuring proper function in extreme conditions.
    5.Chambering Support – A good bolt has enhanced support which ensures alignment with chambered rounds during firing cycles.

Now let's have a look at some top options.

Top Recommendations

1) Toolcraft MPI BCG (Bolt Carrier Group)

The Toolcraft MPI BCG lead over others because it’s made out of carpenter 158 steel that underwent Magnetic Particle Inspection (MPI). This metallurgical process identifies any cracks or flaws in dimensions before they become an issue down range giving you peace-of-mind when using it consistently over time.

This option comes fully assembled so all you need to do is drop it into place which makes installation easy.

2) BCM M16 Bolt Carrier Group

The BCM (Bravo Company Manufacturing) M16 bolt carrier group is a top-rated option for AR-15 rifles. It's made from high-grade steel and coated with a durable phosphate finish that reduces friction and wear.

This bolt also features an enhanced extractor design that provides excellent extraction rates, ensuring reliable cycling even in adverse conditions like mud or sand.

3) Aero Precision Bolt Carrier Group

Aero Precision is known for their quality manufacturing of firearm parts, and the Aero Precision Bolt Carrier Group is no exception. This BCG comes with either nitride or phosphate coating options which helps to prevent rusting over time while also resisting heat damage from extended firing sessions.

Another feature of this product is its full auto compatibility due to it being machined as close to Mil-Spec tolerances which allows you more customization when building out your rifle later on down the line.


When it comes down to choosing the best bolt for your AR-15, there are many great options available on today’s market. Our top picks include Toolcraft MPI BCG, BCM M16 Bolt Carrier Group & Aero Precision’s offering – all designed with precision machining & superior materials in mind ensuring long-lasting durability under heavy use conditions such as range shooting sessions or tactical operations.
To ensure longevity we advise proper maintenance including lubrication after each session but overall these choices offer unmatched performance without breaking budgets – giving shooters peace-of-mind knowing they have reliable components they can trust every time they pull the trigger!


What is the best bolt for an AR-15?

The bolt is one of the most important parts of any firearm, especially in semi-automatic rifles like the AR-15. The quality and reliability of a bolt can greatly affect the overall performance and accuracy of your rifle. If you're looking for the best bolt for your AR-15, there are several factors to consider.

Firstly, you need to decide on what material you want your bolt made from. The most common materials used are 9310 steel or Carpenter 158 steel – both materials have their own unique properties that make them suitable for use in bolts. For example, Carpenter 158 steel has better fatigue resistance than 9310 steel but is more prone to breaking under extreme stress.

Secondly, consider if you want a coated or uncoated bolt. Coated bolts typically have better lubricity and corrosion resistance than uncoated bolts but may cost more.

Lastly, make sure that whatever type of bolt you choose fits properly into your upper receiver group (URG). A mismatched URG can result in issues with cycling ammunition or cause other malfunctions during firing.

How do I install a new AR-15 Bolt?

Installing a new Bolt on an AR-15 follows standard procedures that require basic gunsmithing skills such as knowledge about disassembling/re-assembling firearms safely and correctly using proper tools such as punches and wrenches among others (depending on brand specifics).

To replace an old/broken/ineffective Bolt with a new one:

  1. Remove magazine
  2. Pull Back Charging Handle To Check Chamber Status
  4. Remove Old Firing Pin Retaining Pin & Firing Pin.
  5. Push Forward On Carrier Until Gas Key Screws Can Be Accessed Through Carrier Itself – Use Allen Wrenches Here!
    6a.) Replace New Firing Pin In Place Of Old Firing Pin.
    6b.) Lock New Firing Pin In Place With Retaining Pin
  6. Insert New Bolt Into Carrier Group – Apply Lubrication If Desired To Bolt And Inside The Carrier Itself (make sure the gas rings are facing appropriately)
  7. Slide Carrier Back Onto Charging Handle Rails and Ensure Proper Alignment Before Reinserting Receiver Into Lower Receiver.

What is a bolt carrier group?

The bolt carrier group, or BCG, is an essential part of the AR-15 rifle. It's responsible for loading and firing each shot by extracting spent casings, chambering new rounds, and locking them into place before firing.

The BCG consists of several parts: the bolt itself (which contains a locking lug), extractor assembly with spring & O-ring seals that helps hold tension on cartridges in chamber during ignition phases), ejector pin(s)/spring(s), cam/roller pins which assist with proper alignment of parts as they move within assembly.

A high-quality BCG can improve your rifle's reliability while also increasing its lifespan. When shopping for a replacement or upgrade BCG it’s important to consider factors such as material composition (e.g., 9310 steel vs Carpenter 158 steel mentioned earlier) coating options like nickel boron/plating/chrome lining among other things.

Can I replace my current AR-15 Bolt with any other type?

While there are many different types of bolts available on the market that may fit into your particular model AR-15 receiver design – not all bolts will work properly without issue when paired with specific uppers – so it’s important to do some research regarding compatibility before making any purchases if you’re unfamiliar.

For example: A .223 caliber round requires only one locking lug whereas some larger calibers require more lugs for better stability which in turn could cause issues if replaced incorrectly causing malfunctions during normal use//firing sessions where bullets don't correctly seat into barrel chambers and other issues may arise.

How often should I clean my AR-15 bolt?

It's essential to keep your AR-15 bolt clean, oiled, and properly lubricated to ensure the best performance. Over time, buildup of carbon residue can reduce firing reliability or even cause malfunctions if left unchecked – so regular cleaning is vital for keeping things running smoothly.

How frequently you need to clean your bolt depends on how much you use it. Typically after each use is recommended but in some cases where there are multiple rounds fired during a single session (or several sessions over a day/weekend) more frequent cleaning/lubrication will be necessary – especially when using dirty ammo types such as surplus military ammunition which typically fouls up components faster than cleaner burning commercial loads.

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