Are you looking to build your very own AR 15 lower parts kit from scratch? If so, you've come to the right place! In this blog post, we'll be guiding you step-by-step on how to assemble your AR 15 lower parts kit, using all the necessary components to ensure a successful build. We'll provide you with all the information you need to know about the various components of the AR 15 lower parts kit and walk you through the process of putting it all together.

1) Gather your tools and materials

Before you can start building your AR 15 lower parts kit from scratch, you need to make sure you have the right tools and materials on hand. You'll need an receiver (or another compatible receiver for your parts kit), a drill and bits, a hammer, pliers, and a screwdriver or punch. You'll also need all the pieces of the parts kit including the trigger, magazine release, bolt release, pistol grip, and stock. Make sure to double-check that all the pieces are compatible with your receiver. Once you have everything, you're ready to get started!

2) Assemble the receiver

The first step in building your AR 15 lower parts kit is to assemble the receiver. To do this, you'll need an AR 15 lower parts kit that includes all the necessary parts, tools, and instructions. Once you have the kit, follow the included instructions to assemble the receiver. Start by attaching the buffer tube adapter to the rear of the receiver. Next, attach the fire control group (FCG) to the receiver. The FCG consists of the trigger, disconnector, hammer, and pins for attaching them. Make sure to insert the pins correctly, as improper insertion can cause the gun to malfunction. Once the FCG is installed, install the safety selector and bolt release. Finally, attach the pistol grip to complete the receiver assembly.

3) Install the trigger

The trigger is a key component of your AR 15 lower parts kit, so it's important to ensure you install it correctly. To begin, make sure the selector switch lever is in the center position. Then, insert the trigger spring, with the hook end of the spring in the front and the coil end in the back. Next, insert the trigger pin and fasten it with a roll pin. Finally, place the trigger assembly into the receiver and secure it with the trigger pin. Once that is complete, you can attach the safety selector lever and you are finished. You now have a fully functioning AR 15 lower parts kit with a properly installed trigger!

4) Install the magazine release

Installing the magazine release on your AR 15 lower parts kit is a relatively straightforward process. First, make sure you have the appropriate tools and materials. You will need a punch, a screwdriver, and some lubricant.

Start by inserting the magazine release into the receiver, making sure to align it correctly so that the button is facing outwards. Secure the release in place with a setscrew and use a punch to drive it in.

Next, apply a thin layer of lubricant to the button. This will help to ensure that it works smoothly and reliably. Now, slide the release spring onto the magazine release and use a screwdriver to secure it in place. Make sure to use enough force to ensure that it won't come loose.

Finally, check that everything is properly aligned and adjust if necessary. You can now reassemble the AR 15 lower parts kit and test out the magazine release.

5) Install the bolt release

The bolt release is an important part of your AR 15 lower parts kit and it needs to be installed correctly for your rifle to function properly. To install the bolt release, start by placing the bolt catch spring and plunger in the receiver. Make sure that the spring is facing the same direction as the plunger and then slide them into the bolt catch slot.

Once you have done this, place the bolt catch into the lower receiver. Now it's time to insert the roll pin into the bolt catch. You will need a punch or other tool to ensure the roll pin is placed correctly.

Once the roll pin is in place, you can now install the magazine release button onto the left side of the lower receiver. Secure it with the provided screws and make sure that it is firmly in place. Now it's time to put the bolt release lever on top of the bolt catch and secure it with the provided screws.

Now you've finished installing your AR 15 lower parts kit, you can test out your rifle's functionality. Ensure that everything functions correctly and you're good to go!

6) Install the pistol grip

Installing the pistol grip is the last step in building your AR 15 lower parts kit. It's important to take your time and follow the instructions carefully to ensure a secure fit. To begin, you'll need the pistol grip itself and a couple of screws.

Start by placing the pistol grip against the lower receiver, aligning the holes in the grip with the holes in the receiver. Secure the grip to the receiver by tightening the screws into place with a screwdriver. Be sure not to over-tighten the screws to avoid stripping the threads.

Next, insert the grip screw into the back of the pistol grip and tighten it down. Make sure that the screw is seated properly before tightening completely to prevent any damage to the lower receiver.

Once you've tightened both screws, you can test the grip by pressing down firmly on it from both sides. If it doesn't budge, you're done! Your AR 15 lower parts kit is now fully assembled and ready for use.