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AR-15 Barrel Install | Tips & Tricks

You can always take your gun to a gunsmith and get the barrel installed. However, you can also build it yourself. If you are more of the do it yourself type, then you doing your own AR-15 barrel install can be a fun project. The big thing you need to be sure to look out for is the proper headspace. This is something you can do yourself but can cost a bit of money to buy the tools. If you are buying quality parts you shouldn’t be too bad off.

AR-15 Barrel Install

We have for you a step by step process on installing your barrel onto your AR-15 upper. It will allow you to easily get your barrel installed and ready to go shoot as soon as possible. Check it out.

What you will need:

1. Upper Receiver

Clamp your upper receiver in the receiver block and put it in the vice.

2. Barrel Install

Take your barrel and slide it into the upper receiver. Make sure the locating pin and groove in the upper receiver match up and that the barrel is flush with the upper receiver.

3. Barrel Nut Install

Take your barrel nut and slide it on to the barrel until it is hand tight. You now want to torque it into place. You want the grooves on the back of the nut to line up with the receiver, there is a little hole to line up to. That’s where the gas tube will go.

4. Torque the Barrel Nut

If its a new barrel nut and receiver you want to torque it and loosen it 2 or 3 times to pre-stretch the threads. If not the threads can actually stretch while you are shooting and the barrel nut can work itself loose. This will torque anywhere between 30 and 70 ft. lbs. It’s a very broad range.

5. Gas Block

Take the upper off the vice and put the gas block in the vice.

6. Gas Tube Install

Take your gas tube and place it in the gas block with the big hole facing down and the tiny holes matching with the holes on the gas block

7. Insert the Roll Pin

Take your pin with some needle nose pliers and use that to start the pin into the gas block.

8. Use Roll Pin Punch to Complete the Install

Finish installing it with the correct roll pin punch. And that is the easy way to install the roll pin, be sure to buy a couple extras so that if you lose it or break it, you don’t have to wait to get a new one.

9. Install the Gas Block onto the Barrel

Now you place your receiver back on the vice and slip the gas tube onto the barrel and into the receiver. Make sure that your gas port hole corresponds to the hole in the gas block. If you don’t, the gun will have short stroke problems, failure to eject problems, failure to feed problems, along with others.

10. Handguard Install

You are pretty much done with your barrel install and can now put on your handguard. Thread on your handguard, but be careful that you don’t cross thread the hand guard. You can easily ruin the threads or break the barrel nut.

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11. Install the Set Screws

It’s time to put your set screws in and lock the handguard down. You want to skip the top whole when putting in your set screws because if you do you can crimp your gas tube and cause some functioning problems with your gun.

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12. Flash Suppressor Placement

Once the handguard is locked down, place your crush washer on and screw on your flash suppressor. Then tighten it down with your multi-tool.

13. Finished upper receiver

Now you have an assembled upper receiver and barrel. All that’s left is to check the headspace on your barrel.

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You can also check out this full video on the AR-15 Barrel Install

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