Home CMMG How to Assemble AR-9 Upper Receiver Build

How to Assemble AR-9 Upper Receiver Build

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Thanks for watching. This video demonstrates how to build an AR-9 upper- including assembling the barrel, barrel nut, handguard, and muzzle device. It also includes a description of the parts I used.

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21 COMMENTS

  1. Thanks for the explanation of why you need to screw and unscrew the barrel nut 3 times! I always did that step but I really didn't know why you need to do it!๐Ÿ˜ Great complete detailed video!!! Thanks again!

  2. Cool!!! Just got my AR 45 last night wondering where the hell my barrel nut is located……now I know!!! My first AR. Much lighter than my L1A1 and my Frenchy. Yes….I am a big 308 fan.

  3. Thatโ€™s the main difference between men & women, we buy parts/guns even when we donโ€™t have the money & women can stay patient & wait until they get a good deal ๐Ÿ˜†. Great build, it looks good.

  4. "just watch a girl tighten up a barrel nut"……Yeah baby. But I am just starting my first ever AR build. I am in the buying parts phase. I decided on 30 Luger of all things. Mostly that the ammo is cheaper than 9mm and can be found. I can switch to 9mm when and if things ever calm down. Glad I found this video

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