Shop the 5.11 Closeout Locker

AR 15 Upper Receiver Assembly Video


Our AR 15 upper receiver assembly video will show you how to assemble your AR 15 upper from its individual components.

This video features an AR 15 Rifle, however, the same procedures will work with an AR 10.

If you find our videos helpful please consider supporting us for free by using our affiliate banners and links on or by donating by becoming a Patron on Patreon Your support helps us continue providing high-quality content.  

If you want to learn more about the tools used in the AR 15  Videos visit If you need more information about troubleshooting visit our AR Troubleshooting Guide at


Video index:

Assembling the forward assist – 0:17

Installing the forward assist – 1:50

Installing the dust cover – 3:05

Assembling the barrel nut assembly – 4:14

Installing the barrel – 5:06

Installing gas tube and gas block – 8:53

Installing the flash hider – 12:04

Installing the bolt carrier group – 12:57

Installing the upper onto the lower – 14:01

Installing the handguards – 14:33

Installing the carry handle – 15:55

Shop the 5.11 Closeout Locker