AR 15 Parts Guide For 2023 | AR 15 Parts List

AR 15 Parts Guide For 2023 | AR 15 Parts List

AR 15 Parts Guide For 2023

Welcome to the AR-15 Parts Guide for 2023, where we dive into the exciting world of AR-15 customization and explore the top components to enhance your rifle's performance and functionality. As we enter a new year, advancements in technology have brought forth an array of innovative and high-quality parts that cater to the needs and preferences of firearm enthusiasts. Whether you're a seasoned shooter looking to upgrade your AR-15 or a newcomer eager to personalize your rifle, this guide will provide valuable insights and recommendations to help you make informed decisions in selecting the best parts for your AR-15 build. From barrels to triggers, optics to stocks, and beyond, we'll explore the latest offerings on the market, ensuring that your AR-15 is optimized for accuracy, reliability, and versatility.

Lower Receiver

The lower receiver is part of the AR-15 that houses the trigger group, magazine well, and controls, making it the "firearm" component regulated by the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) in the United States. It requires a background check and must be purchased through a licensed firearms dealer or obtained through other legal means, per local laws and regulations.

When selecting a lower receiver, you have two primary options: forged or billet.

  1. Forged Lower Receiver: Forged receivers are made by hammering and shaping a solid aluminum alloy into the desired shape. They are generally more affordable due to mass production and are widely available. Forged lowers tend to be stable and durable, providing reliable performance.
  2. Billet Lower Receiver: Billet receivers are machined from a solid aluminum alloy block. They often feature unique and intricate designs that can be aesthetically appealing to some users. Billet lowers are typically more expensive due to the additional machining process. They may offer some minor performance enhancements or customization options.

Personal preference, budget, and desired aesthetics are vital when choosing between forged and billet receivers. Both options are widely used and offer reliable performance, so the decision comes down to individual preference and the specific design features you are looking for.

It's important to note that regardless of whether you choose a forged or billet lower receiver, they must be compatible with other AR-15 components, such as the upper receiver, trigger group, and magazines. Please ensure the lower receiver you select is designed for the appropriate caliber and has the necessary features and specifications to meet your needs.

Upper Receiver

The upper receiver of an AR-15 is the part of the firearm that houses the barrel, bolt carrier group, and other components necessary for the firearm's operation. When selecting an upper receiver, there are a few factors to consider:

Material: Upper receivers are commonly made of either forged or billet aluminum.

  • Forged Upper Receiver: Forged receivers are made by hammering and shaping a solid aluminum alloy. They are known for their strength, durability, and affordability. Forged upper receivers are widely available and are the most common choice for AR-15 builds.
  • Billet Upper Receiver: Billet receivers are machined from a solid aluminum alloy block. They offer more intricate and unique designs compared to forged receivers. Billet upper receivers are generally more expensive due to the additional machining process. They can provide a more customized and visually appealing look.
  1. Compatibility: Ensure your upper receiver is compatible with your lower receiver. AR-15 upper and lower receivers are typically designed to be interchangeable within mil-spec (military specification) standards. However, it's always a good idea to check compatibility to avoid any issues with fit or function.
  2. Handguard Compatibility: Consider the handguard or rail system you plan to use and ensure that the upper receiver is compatible. Standard attachment systems include M-LOK, KeyMod, and Picatinny rail. Please verify that the upper receiver has the appropriate mounting provisions for your handguard.
  3. Design: The design of the upper receiver can vary from traditional to more modern styles. Traditional designs often feature a fixed carry handle and A2-style sights. In contrast, modern designs may have a flat top with a Picatinny rail for attaching optics, sights, or other accessories. You can choose a design that suits your aesthetic preferences and intended use.
  4. Additional Features: Some upper receivers may have other features, such as a forward assist, shell deflector, or dust cover. These features can enhance the functionality and reliability of the firearm. Still, their presence or absence may depend on personal preference and specific use cases.

    AR 15 Upper Receiver


The AR-15 barrel is a vital component that influences performance and accuracy. It comes in different lengths, profiles, chamberings, and twist rates. Barrel length affects maneuverability and velocity, profiles balance weight and accuracy, chambering determines ammo compatibility, and twist rate stabilizes bullets. Choosing the right barrel optimizes AR-15 performance based on shooting needs and preferences.

Length: The length of the barrel affects the overall size, weight, and maneuverability of your AR-15. Standard barrel lengths for AR-15 rifles include:

  • Carbine Length: Typically around 14.5 to 16 inches. Carbine-length barrels are compact and offer good maneuverability in close-quarters situations.
  • Mid-Length: Typically around 16 to 18 inches. Mid-length barrels balance maneuverability and increased muzzle velocity, resulting in improved accuracy and reduced recoil compared to carbine-length barrels.
  • Rifle Length: Typically around 20 to 24 inches. Rifle-length barrels offer the longest sight radius, increased muzzle velocity, and improved long-range accuracy.

Consider your intended use and shooting preferences when choosing the barrel length.

Profile: The barrel's profile refers to its thickness and weight distribution along its length. Standard barrel profiles include:

  • Lightweight Profile: These barrels have reduced weight, making the firearm lighter and more maneuverable. They are suitable for applications that prioritize portability and handling.
  • Government Profile: Also known as the "M4" profile, these barrels have a thicker profile under the handguard and are lighter towards the muzzle. They strike a balance between weight and heat dissipation.
  • Heavy Profile: These barrels have a thicker and heavier profile throughout their length. They offer improved heat dissipation and increased rigidity, enhancing accuracy during sustained fire. Heavy profile barrels are commonly used in precision shooting and long-range applications.

Select the barrel profile that aligns with your intended use, considering weight, heat management, and desired shooting characteristics.

Chambering: The most common chamberings for AR-15 barrels are 5.56 NATO and .223 Remington. It's essential to ensure compatibility between the chambering of your barrel and the ammunition you plan to use. 5.56 NATO chambers can safely fire 5.56 NATO and .223 Remington ammunition.223 Remington chambers are designed specifically for .223 Remington ammunition.

Suppose you plan to shoot surplus military ammunition. In that case, 5.56 NATO chambers are recommended due to potential pressure differences between 5.56 NATO and .223 Remington rounds.

Twist Rate: The twist rate refers to the rate at which the rifling inside the barrel makes one complete revolution. Although other options are available, standard twist rates for AR-15 barrels are 1:7 and 1:8.

  • 1:7 Twist Rate: This twist rate is generally favored for stabilizing longer and heavier bullets, improving accuracy and stability. It can handle a wide range of bullet weights effectively.
  • 1:8 Twist Rate: This twist rate is a versatile choice, stabilizing a wide range of bullet weights, including lighter and heavier options. It strikes a balance between stability and flexibility.
  • 1:9 twist rate: Shooters can effectively stabilize a wide range of bullet weights. This versatility allows for the use of both lighter and heavier projectiles, accommodating various shooting applications and preferences.

Please look at the bullet weight you plan to use most frequently when selecting the barrel twist rate. Heavier bullets generally benefit from faster twist rates.

When choosing a barrel for your AR-15, it's crucial to consider your intended use, shooting preferences, and the specific requirements of your build. You can opt for reputable manufacturers known for producing high-quality barrels that meet your desired specifications and budget.

Bolt Carrier Group (BCG)

The Bolt Carrier Group (BCG) is a critical component of your AR-15 and is responsible for reliable cycling. In 2023, new BCG options offer enhanced performance. This guide explores vital factors to consider when selecting a BCG, including durable coatings, adequately staked gas keys, and lightweight designs. Whether you're an experienced shooter or new to the AR-15 platform, this guide will help you choose the ideal BCG for improved reliability and a better shooting experience.

  • The BCG is the heart of your AR-15 and is responsible for the reliable cycling of rounds.
  • Look for high-quality BCGs with durable materials such as nickel boron or chrome coatings for enhanced corrosion resistance and lubricity.
  • Properly staked gas keys ensure a secure seal, preventing leakage and maintaining consistent cycling.
  • Consider new lightweight BCG options available in 2023 for reduced reciprocating mass, resulting in smoother operation and faster follow-up shots.
  • Lightweight BCGs can improve handling and maneuverability, especially in dynamic shooting scenarios.
  • Prioritize selecting a lightweight BCG designed and tested for reliable performance with your AR-15 setup.
  • Consult reputable manufacturers or experts to explore the latest options and ensure compatibility and optimal performance.

By considering these factors and exploring new lightweight BCG options available in 2023, you can enhance the reliability, performance, and overall shooting experience of your AR-15 rifle.

AR 15 Bolt Carrier Group


The trigger is a critical interface between the shooter and the rifle, playing a crucial role in overall shooting experience and accuracy. Upgrading your rifle's trigger can significantly impact your shooting performance, allowing for better control, reduced trigger pull weight, minimal creep, and crisp breaks. This guide will explore the importance of trigger upgrades and highlight key considerations when selecting the right trigger for your rifle. Whether you are a precision shooter, a competitive shooter, or simply seeking to enhance your shooting skills, improving your trigger can lead to more consistent and accurate shots.

Here are some essential points to consider when upgrading your rifle's trigger:

  • Drop-In Triggers: Consider drop-in triggers that offer easy installation and can replace the factory trigger without gunsmithing. Drop-in triggers are designed to provide a significant performance improvement.
  • Reduced Pull Weight: Look for triggers with reduced pull weight, meaning the force required to break the trigger is lighter. Lighter pull weight can result in improved trigger control and increased accuracy.
  • Minimal Creep: Creep refers to the slight movement of the trigger before it breaks. Opt for triggers with minimal creep, ensuring a smooth and consistent pull, which can contribute to better shot placement.
  • Crisp Break: A crisp break refers to the clean and distinct sensation when the trigger releases the sear, allowing the firing pin to strike the primer. Triggers with a crisp break enhance shooting precision by clearly indicating when the shot will be fired.
  • Single-Stage vs. Two-Stage Triggers: Consider whether you prefer a single-stage or two-stage trigger. Single-stage triggers have a consistent pull weight throughout the entire trigger pull. In contrast, two-stage triggers have a lighter initial pull followed by a slightly heavier break. Choosing between the two depends on your shooting style and preference for a lighter or more deliberate trigger pull.

By upgrading your rifle's trigger, you can experience improved control, reduced pull weight, minimal creep, and a crisp break. These enhancements contribute to more consistent and accurate shots, allowing you to maximize your shooting potential. Choose a trigger that suits your shooting style and preferences, and consult with reputable manufacturers or experts for guidance and installation.

Stocks and Grips

Choosing stocks and grips is crucial in ensuring comfort and ergonomics regarding rifle handling and control. As we step into 2023, there are exciting new developments in stocks and grips that can enhance your shooting experience. Adjustable stocks with length-of-pull adjustments and collapsible features offer personalized fit and easy storage. Meanwhile, ergonomic pistol grips incorporate advanced materials and textures for improved grip and control. This guide will explore the latest advancements in stocks and grips, providing key considerations when selecting these components for your rifle. Whether you are a recreational shooter or a professional, upgrading your stocks and grips in 2023 can elevate your shooting performance to new heights.

Here are some updated points to consider when upgrading stocks and grips in 2023:


  • Advanced Materials: Look for stocks of modern composite materials such as carbon fiber or reinforced polymers. These materials balance durability, lightweight construction, and improved ergonomics.
  • Adjustable Cheek Rests: Consider stocks with adjustable Cheek rests that align your eye with the optic, promoting a more consistent and comfortable shooting position.
  • Enhanced Modularity: Explore stocks with modular features such as M-LOK or Picatinny rail sections, allowing for attaching accessories like monopods, sling mounts, or detachable butt pads.


  • Innovative Textures: New grip textures were introduced in 2023, offering improved traction and control. Look for options with aggressive stippling, multi-directional patterns, or rubberized textures to ensure a secure hold in all conditions.
  • Ergonomic Enhancements: Grips are now designed with enhanced ergonomics, incorporating features like adjustable palm swells or finger grooves to accommodate various hand sizes and shooting styles.
  • Improved Recoil Management: Some grips now incorporate built-in recoil mitigation systems, such as shock-absorbing materials or specialized geometries, to reduce felt recoil and muzzle rise.

By considering these updated factors and exploring the latest advancements in stocks and grips for 2023, you can enhance your rifle's comfort, control, and overall shooting performance. Select stocks and grips that align with your shooting style, preferences, and body size. Consult reputable manufacturers or seek expert advice for compatibility and installation to maximize the benefits of your upgraded stocks and grips.

Muzzle Devices

Muzzle devices play a crucial role in optimizing the performance and functionality of your firearm. In 2023, numerous options cater to various shooting styles and intended uses. These devices serve multiple purposes: recoil reduction, muzzle rise mitigation, and flash suppression. Choosing a suitable muzzle device can significantly enhance follow-up shot accuracy, reduce shooter fatigue, and improve the shooting experience. This guide will delve into the importance of muzzle devices and provide critical considerations when selecting the most suitable one for your needs.

Here are some essential points to consider when choosing a muzzle device in 2023:

  • Compensators: Compensators redirect propellant gases to counteract muzzle rise, reducing recoil and improving follow-up shot accuracy. They are particularly beneficial for rapid and controlled shooting, making them suitable for competition or defensive shooting scenarios.
  • Muzzle Brakes: Muzzle brakes work similarly to compensators but primarily focus on recoil reduction. They vent gases in specific directions to mitigate muzzle rise and diminish felt recoil. Precision shooters or those who shoot powerful calibers often favor muzzle brakes.
  • Flash Hiders: Flash hiders are designed to reduce the visible muzzle flash upon firing. They redirect gases to the sides, minimizing the muzzle signature and preserving night vision. Flash hiders are commonly used in tactical and low-light shooting environments.
  • Combination Devices: Some muzzle devices combine features to offer a balanced approach. For example, a device may have compensator-like properties while providing flash suppression. Combination devices offer versatility and convenience for shooters who desire multiple benefits in one package.
  • Compatibility: Ensure your muzzle device matches your rifle's barrel threading or attachment method. It's essential to verify compatibility to ensure proper installation and functionality.

When selecting a muzzle device, consider your shooting style, intended use, and desired benefits. Remember that some muzzle devices may increase noise and concussion for the shooter or those nearby, so it's crucial to consider the impact on your shooting environment.

By carefully considering these factors and exploring the latest options in muzzle devices for 2023, you can select a device that enhances recoil management, reduces muzzle rise, and suppresses flash, leading to improved shooting performance and an enhanced shooting experience. Consult reputable manufacturers or seek expert advice for compatibility and installation to ensure optimal results.

AR 15 Muzzle Devices

Charging Handle

The charging handle is a vital component of an AR-15 rifle, responsible for chambering rounds and ensuring reliable operation. Upgrading your charging handle can significantly enhance the rifle's reliability and ease of use. In 2023, there are a variety of options available that offer improved manipulation, enhanced grip, and durability. This guide will explore the importance of charging handle upgrades and highlight key considerations when selecting the proper charging handle for your needs. Whether you're a right-handed shooter seeking smoother operation or a left-handed shooter needing ambidextrous controls, upgrading your charging handle can significantly improve your shooting experience.

Here are some essential points to consider when choosing a charging handle in 2023:

  • Ambidextrous Design: Opt for ambidextrous charging handles that provide equal ease of use and manipulation for right- and left-handed shooters. These handles feature extended latches on both sides, allowing for effortless operation regardless of your dominant hand.
  • Extended Latches: Look for charging handles with extended latches that offer enhanced grip and more accessible access, making it quicker and more convenient to charge the rifle, especially in high-stress situations.
  • Smooth Operation: Ensure the charging handle operates smoothly, without binding or sticking, to facilitate reliable chambering and cycling of rounds. Smooth operation contributes to efficient and hassle-free shooting sessions.
  • Increased Grip Surface: Consider charging handles with increased grip surface or textured patterns to enhance control and provide a secure hold. This can be especially beneficial in adverse conditions or when wearing gloves.
  • Durable Construction: Choose charging handles from high-quality materials such as aircraft-grade aluminum or steel for durability and long-lasting performance. The handle should be able to withstand repeated use and potential impact.

By upgrading your charging handle to one that offers enhanced manipulation, extended latches, smooth operation, increased grip surface, and durable construction, you can improve the reliability, ease of use, and overall shooting experience of your AR-15 rifle. Please ensure it's compatible with your specific AR-15 model, and consult reputable manufacturers or experts for guidance and installation if needed.


In 2023, the AR-15 handguards and rails market continues to evolve, providing shooters with a wide range of options to enhance their rifle's functionality and customization. Upgrading your AR-15's handguard or rail system can offer several advantages, such as improved accessory attachment, customization options, and weight reduction. Upgrading your handguard in 2023 can significantly enhance your shooting experience while reducing unnecessary weight and bulk. Whether you prioritize versatility, lightweight construction, or ergonomic design, selecting a suitable handguard or rail system for your AR-15 is crucial. 

Here are some essential points to consider when choosing a handguard or rail system in 2023:

  • Lightweight Construction: Look for handguards or rail systems made from lightweight materials such as aluminum or advanced polymers. This helps reduce overall weight without compromising durability or strength.
  • Durability: Ensure that the handguard or rail system is built to withstand the demands of shooting activities. Look for options with robust construction and corrosion-resistant finishes for long-lasting performance.
  • Ergonomic Design: Seek handguards or rail systems with ergonomic profiles that provide a comfortable and secure grip. This can enhance rifle handling and control, especially during prolonged shooting sessions.
  • Modular Attachment Points: Consider handguards or rail systems with modular attachment points, such as KeyMod or M-LOK, allowing easy and customizable accessory mounting. This versatility lets you attach accessories such as grips, lights, lasers, or bipods where needed.
  • Length and Coverage: Determine the desired length and coverage of the handguard or rail system based on your shooting style and intended use. Options range from short and lightweight designs for compact builds to extended handguards that provide additional space for accessories and support for longer barrels.

By upgrading the AR-15's handguard or rail system to a lightweight, durable, and ergonomic option with modular attachment points, you enhance accessory attachment options, customize your rifle to your specific needs, and reduce unnecessary weight and bulk. Remember to consider compatibility with your AR-15 platform and consult reputable manufacturers or experts for guidance and installation if needed. The handguard is the final component that can save a tremendous amount, making it a significant consideration when optimizing your AR-15's performance in 2023.

AR 15 Handguards

Hopefully, the AR-15 Parts Guide for 2023 has provided a comprehensive overview of the essential components that can elevate your AR-15 rifle's performance and customization. From the Bolt Carrier Group (BCG) to triggers, stocks and grips, muzzle devices, charging handles, and handguards, each component plays a crucial role in enhancing reliability, accuracy, comfort, and accessory compatibility. 2023 brings exciting advancements, offering new options and features that cater to evolving needs and preferences. You can optimize your AR-15 rifle by staying informed and making well-informed decisions to meet your shooting style and preferences. Consult with reputable manufacturers, experts, and fellow enthusiasts to gather insights and recommendations aligned with your needs. Prioritize safety, legality, and proper installation procedures when modifying your firearm. As the AR-15 platform evolves, continuous learning, exploring new trends, and engaging with the community will help you unlock the full potential of your AR-15 rifle in 2023 and beyond. Stay safe and enjoy the enhanced shooting experience!

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Jul 18th 2023 Black Rifle Depot Staff

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