Building a GLOCK from the Ground Up: Starting with the Lower

Building a GLOCK from the ground up is a fun and rewarding experience. But, where do you start? The first step in any GLOCK build is to grab a frame blank, also known as a GLOCK lower. A GLOCK lower is the foundation of your build, so it’s important to choose one that is compatible with the parts you plan to use for the rest of your build. In this blog post, we will discuss the steps to take when building a GLOCK from the ground up, starting with the GLOCK lower.

What You’ll Need

Building a GLOCK from the ground up is an exciting and rewarding process. To get started, you’ll need to have all of the necessary components and tools on hand. To make things simpler, we recommend purchasing a frame blank from This 80% lower is a great option for building your custom GLOCK as it contains the basic shell of the gun. It is pre-milled and ready for you to begin customizing your firearm.

The frame blanks are perfect for building your dream GLOCK. They are made of high quality aluminum alloy and have been designed with a smooth surface that won’t snag or tear up your hands when handling your gun. Additionally, the frame blanks come with all the necessary holes pre-drilled for you to attach all of the essential components. Now that you have the frame blank, let’s take a look at the other components that will complete your GLOCK build.

The Lower Receiver

When beginning your GLOCK 80% build, the first component you will need to acquire is the lower receiver. This is the “frame” of the gun, which provides the foundation for all the other components to be assembled. When it comes to selecting a lower receiver, there are two main options: a complete or stripped lower, or an 80% lower.

A complete or stripped lower already has all the major components included and simply needs to be assembled. An 80% lower does not have any of the major components installed and requires a bit more work on the builder’s part. is a great place to find quality 80% lowers for your GLOCK build. With just a few simple steps, you can get your frame built and ready to receive the other components.

The Barrel

The barrel of your GLOCK 80% build is an important part of the gun. The barrel will determine accuracy, range, and more. To start, you’ll need to choose a barrel that fits your frame blank. Common choices include a 4.5”, 5”, and 6” barrel. A longer barrel will increase accuracy and range, but it also makes the gun longer and harder to conceal.

Your barrel should be machined for polygonal rifling. Polygonal rifling is a type of barrel rifling that features lands and grooves that are not as straight as traditional rifling. This style of rifling can help increase velocity and provide more accuracy than traditional rifling.

You should also consider whether or not you want an extended barrel. Extended barrels provide more space for accessory attachments and can help with accuracy.

Finally, you should think about the type of finish you want on your barrel. There are many options available, including stainless steel, blued steel, and nitride finishes. Each finish provides different levels of corrosion protection and durability.