Are you interested in building your own firearm? An 80 lower receiver is the perfect place to start! With the right tools, knowledge, and some patience, you can assemble your own firearm from scratch. In this blog post, we’ll take you through the step-by-step process of constructing a firearm using an 80 lower receiver. From assembly to shooting, you’ll have all the information you need to create your own firearm!

Understanding the Basics of 80 Lower Receivers

Building your own firearm can be an exciting and rewarding experience. To get started, it’s important to understand the basics of 80 lower receivers. These receivers are the foundation of your firearm, serving as the main housing for the trigger, magazine, and other essential components.

Unlike fully finished receivers, 80 lower receivers are not considered firearms by themselves, allowing gun builders to purchase and build their own firearm legally. However, it’s important to note that each state has its own laws and regulations regarding the sale, ownership, and assembly of firearms, so it’s crucial to research and understand your local laws before beginning your build.

An 80 lower receiver is essentially an unfinished or “blank” receiver. It requires some machining and assembly to transform it into a functioning firearm. These receivers are typically made from aluminum, making them lightweight and durable. They are available in various styles and calibers to suit different firearm builds.

One of the advantages of using an 80 lower receiver is the ability to customize your firearm to your preferences. You can choose the type of trigger, stock, grip, and other accessories to create a firearm that fits your needs and shooting style.

Building your own firearm using an 80 lower receiver requires some technical knowledge and skill. It’s essential to have a solid understanding of firearm mechanics and safety. Additionally, having access to the right tools and equipment is crucial for a successful build.

Choosing the Right Tools and Equipment

When it comes to building your own firearm using an 80 lower receiver, choosing the right tools and equipment is crucial for a successful build. Aspiring gun builders need to have the proper tools to complete the machining and assembly process accurately and safely.

First and foremost, you will need a quality drill press or milling machine to accurately remove material from the receiver. This ensures the necessary holes and cavities are created for the various components of your firearm. Additionally, a vice and vise blocks are essential for securely holding the receiver during the machining process.

Other tools you will need include a set of high-quality drill bits, a ball peen hammer for driving in pins, and a torque wrench for properly tightening screws and fasteners. A selection of files and sandpaper is also useful for smoothing rough edges and ensuring a proper fit for the components.

Safety equipment is of utmost importance when working with firearms. Eye protection, ear protection, and a dust mask should always be worn during the machining and assembly process.

Assembling Your Lower Receiver Kit

Now that you have your 80 lower receiver and all the necessary tools and equipment, it’s time to start assembling your lower receiver kit! This is where the real fun begins. The lower receiver kit typically includes all the necessary parts to complete your firearm, such as the trigger, buffer tube, pistol grip, and magazine release.

To start, make sure you have a clean and well-lit workspace. Begin by attaching the trigger group to the lower receiver, ensuring that all the pins are properly aligned. Use a hammer or a mallet to gently tap the pins into place. Next, install the pistol grip and secure it with the provided screws. Make sure it is snug, but be careful not to overtighten.

Now, it’s time to install the buffer tube and buffer spring. This is what provides the necessary recoil to cycle the firearm. Carefully thread the buffer tube into the lower receiver, making sure it is aligned properly. Use a castle nut wrench to tighten the castle nut securely. Then, slide the buffer spring and buffer into the buffer tube. It should slide smoothly without any resistance.

Finally, attach the magazine release. This is what allows you to easily insert and remove the magazine from your firearm. Secure it in place with the provided screws, making sure it is flush against the lower receiver.

Installing the Trigger Group and Safety Selector

Now that your lower receiver is assembled, it’s time to move on to installing the trigger group and safety selector. This is an important step in completing your firearm, as it determines the functionality and safety features of your weapon.

Begin by carefully inserting the trigger group into the lower receiver. Ensure that all the pins line up properly and insert them one by one, making sure they are secure. Take your time and double-check that everything is aligned correctly.

Next, install the safety selector. This is the mechanism that allows you to engage and disengage the firearm’s safety. Simply slide it into place and secure it with the provided screws.

Attaching the Upper Receiver and Barrel

Now that your lower receiver is assembled and the trigger group and safety selector are in place, it’s time to move on to attaching the upper receiver and barrel. This is a crucial step in completing your firearm and bringing it one step closer to being ready to shoot.

Begin by carefully aligning the upper receiver with the lower receiver. Make sure the takedown pins line up properly and insert them one by one, ensuring they are securely in place. Once the upper receiver is attached, it’s time to install the barrel.

Slide the barrel into the upper receiver, making sure it fits snugly and aligns with the gas tube. Use a torque wrench to tighten the barrel nut to the specified torque specifications. This will ensure that the barrel is securely attached to the upper receiver.