Build the Perfect AR-15 with American-Made Parts


Are you looking to build your own AR-15? Customizing your rifle or pistol with quality American-made AR-15 parts is the perfect way to create a unique and personalized firearm. With so many AR 15 parts to choose from, it can be hard to decide which ones are the best for your build. In this blog post, we will explore some of the top American-made AR-15 parts available, helping you to create the perfect rifle or pistol.

Upper Receiver

One of the most important components of any AR-15 is the upper receiver. This is the part of the gun that holds all of the other components in place, and it’s critical for accuracy, reliability, and performance. If you’re looking to customize your rifle or pistol, the right upper receiver is essential.

At GunBuilders, we offer a variety of quality American-made AR-15 parts, including a wide selection of upper receivers. Whether you’re looking for a lightweight, precision-machined unit or a beefier forged receiver, we’ve got you covered. All of our AR 15 parts are made from high-grade materials and designed for superior performance and durability. So whatever your needs, you can rest assured that you’ll get an upper receiver that will take your shooting experience to the next level.

Lower Receiver

The lower receiver of an AR-15 is the foundation of the gun. This component houses all the parts of your rifle, and it’s critical that you choose a quality, durable lower receiver for your build. At GunBuilders, we offer a variety of AR 15 parts to customize your lower receiver, including different designs and materials.

For the most part, lower receivers come in two types: stripped or complete. Stripped lower receivers are bare bones and just include the shell itself. They require some assembly and do not include any trigger components. On the other hand, complete lower receivers come with all the necessary internal components and are ready to accept a magazine and stock.

When choosing a lower receiver for your AR-15, you should consider its construction material. Aluminum is the most popular option and is lightweight and strong. But if you’re looking for something a bit more robust, consider polymer or titanium.

No matter what type of lower receiver you choose, make sure it’s compatible with other AR 15 parts for a secure fit. GunBuilders offers a range of quality, American-made lower receivers for you to choose from so you can customize your rifle or pistol exactly the way you want it.


The barrel of an AR-15 is one of the most important components to consider when customizing. It’s the part of the firearm that determines the velocity and accuracy of the bullets fired. Choosing the right barrel is crucial for a successful AR-15 build.

When it comes to choosing an AR-15 barrel, there are several factors to consider such as length, twist rate, and material. The length of the barrel you choose will affect accuracy and velocity, so make sure you have a clear understanding of what you’re looking for. The twist rate, or rate at which the rifling spins the bullet, should be chosen depending on the ammunition you plan to use with your rifle.

The material used in your barrel can also have an impact on performance. AR-15 barrels can be made from stainless steel, carbon steel, or aluminum. Stainless steel barrels are usually more durable and corrosion-resistant, while aluminum barrels are lighter but may not perform as well in extreme temperatures. Carbon steel barrels offer good value and performance but can be more prone to corrosion.

No matter what type of barrel you choose for your AR-15, make sure it’s made with high-quality American-made parts. Quality AR 15 parts are essential to achieving a reliable and accurate rifle that can withstand years of shooting.