How To Put Together An Ar 15?

Step	Instructions	Image
1	Assemble the lower receiver
2	Install the trigger assembly
3	Install the bolt carrier group
4	Install the charging handle
5	Install the barrel
6	Install the handguard
7	Install the muzzle device

Tools and Materials

The following tools and materials are required to assemble an AR-15:

• AR-15 lower receiver
• AR-15 upper receiver
• AR-15 barrel
• AR-15 bolt carrier group
• AR-15 charging handle
• AR-15 handguard
• AR-15 stock
• AR-15 buffer tube
• AR-15 buffer spring
• AR-15 buffer
• AR-15 magazine
• AR-15 optic (optional)
• AR-15 sling (optional)
• AR-15 cleaning kit (optional)

Assembly Steps

The following steps are involved in assembling an AR-15:

1. Install the barrel into the upper receiver.
1. Insert the barrel into the upper receiver until it is flush with the rear of the receiver.
2. Secure the barrel in place with the barrel nut.
3. Torque the barrel nut to the specified torque.
2. Install the bolt carrier group into the upper receiver.
1. Insert the bolt carrier group into the upper receiver until it is flush with the rear of the receiver.
2. Secure the bolt carrier group in place with the rear takedown pin.
3. Install the charging handle into the upper receiver.
1. Insert the charging handle into the upper receiver until it is flush with the front of the receiver.
2. Secure the charging handle in place with the front takedown pin.
4. Install the handguard onto the upper receiver.
1. Align the handguard with the upper receiver.
2. Slide the handguard onto the upper receiver until it is flush with the front of the receiver.
3. Secure the handguard in place with the barrel nut.
4. Torque the barrel nut to the specified torque.
5. Install the stock onto the lower receiver.
1. Align the stock with the lower receiver.
2. Insert the stock into the lower receiver until it is flush with the rear of the receiver.
3. Secure the stock in place with the buffer tube castle nut and end plate.
4. Torque the castle nut to the specified torque.
6. Install the buffer tube and buffer spring into the lower receiver.
1. Insert the buffer tube into the lower receiver until it is flush with the rear of the receiver.
2. Insert the buffer spring into the buffer tube.
3. Insert the buffer into the buffer tube.
7. Install the magazine into the lower receiver.
1. Insert the magazine into the magazine well until it is flush with the front of the receiver.
8. Install the optic (optional).
1. Mount the optic to the handguard.
2. Secure the optic in place with the appropriate mounting hardware.
9. Install the sling (optional).
1. Attach the sling swivels to the front and rear of the rifle.
2. Attach the sling to the sling swivels.

By following these steps, you will be able to assemble your own AR-15. However, it is important to note that this is just a basic guide and that there may be other steps involved depending on the specific model of AR-15 that you are assembling. If you are unsure of how to assemble your AR-15, it is always best to consult with a qualified gunsmith.

Additional Resources

• [AR-15 Assembly Guide](https://www.ar15.com/content/ar-15-assembly/)
• [AR-15 Disassembly Guide](https://www.ar15.com/content/ar-15-disassembly/)
• [AR-15 Parts List](https://www.ar15.com/content/ar-15-parts-list/)
• [AR-15 Troubleshooting Guide](https://www.ar15.com/content/ar-15-troubleshooting/)

3. Safety Precautions

When assembling an AR-15, it is important to take all necessary safety precautions to avoid injury. Here are a few tips:

• Always wear eye protection. This is the most important safety precaution you can take when working with firearms. Eye protection will protect your eyes from debris, dust, and other particles that can be released during the assembly process.
• Use a vise or other secure work surface. When assembling an AR-15, it is important to use a vise or other secure work surface to hold the lower receiver in place. This will help to prevent the receiver from slipping and causing injury.
• Keep the muzzle pointed in a safe direction. At all times, keep the muzzle of the AR-15 pointed in a safe direction, even when it is disassembled. This means pointing the muzzle away from yourself, other people, and pets.
• Follow the manufacturer’s instructions. When assembling an AR-15, it is important to follow the manufacturer’s instructions carefully. This will help to ensure that the rifle is assembled correctly and safely.

4. Troubleshooting

If you are having trouble assembling your AR-15, there are a few things you can check to troubleshoot the issue. Here are a few common problems and solutions:

• The bolt carrier group is not locking back on the last round. This is a common problem that can be caused by a few different things. First, make sure that the bolt carrier group is properly installed. The bolt carrier group should be seated all the way back in the receiver, and the bolt should be locked in place. If the bolt carrier group is not properly installed, it will not be able to lock back on the last round.
• The rifle is not cycling properly. This can be caused by a few different things. First, make sure that the rifle is properly lubricated. The bolt carrier group and the inside of the receiver should be lightly lubricated with a high-quality gun oil. If the rifle is not properly lubricated, it will not cycle properly.
• The rifle is not firing. This can be caused by a few different things. First, make sure that the rifle is loaded with ammunition. If the rifle is not loaded, it will not fire. Second, make sure that the firing pin is properly installed. The firing pin is a small, spring-loaded pin that strikes the primer of the cartridge to ignite the powder. If the firing pin is not properly installed, the rifle will not fire.

If you are still having trouble assembling or troubleshooting your AR-15, it is best to take it to a qualified gunsmith for help.

Assembling an AR-15 is a relatively simple process, but it is important to take all necessary safety precautions to avoid injury. By following the tips in this article, you can assemble your AR-15 safely and correctly.