Home CMMG How to Install Gas Block on AR10 | Aero Precision M5

How to Install Gas Block on AR10 | Aero Precision M5

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This video is for educational, demonstration, and cleaning purposes only. Today we’ll be going over the proper Gas Block on a Aero Precision Upper. I hope this is helpful!

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25 COMMENTS

  1. This is why I love dimpled barrels. No guesswork on alignment. You could also buy a set ofHB IDUSTRIES .30 cal gas block alignment pins. Disposable and they have a super easy install video. I liked the light through the hole technique.

  2. There are different gas block size options on the aero precision website. How do I know what size to get. .750, .936,.875? I’ve always bought complete uppers. This is my first complete build. I have the enhanced upper with a 20” barrel in .308. Any help is greatly appreciated. Your videos are super helpful. Thanks for taking the time to make them.

  3. Put a piece of spaghetti in the barrel gas port and break it off at the surface of the barrel. Then slide the gas block on and turn the barrel and block over. The spaghetti piece will fall into the gas block and act like a keyway centering the assembly. Then tighten the screws locking the block in place. Almost done now. Turn the barrel over again letting the spighetti fall back into the barrel. Run a cleaning rod down the barrel breaking the spighetti and pushing it out. Run a patch down the bore making sure it is clean… Done.. It is lined up.

  4. I’ve always installed the gas tube into my adjustable gas blocks before I install on the rifle. Easier to work with and just use small drill bit from back as a pilot to keep roll pin holes lined up as one hammers the roll pin through gas block and tube. Good video

  5. Looks like a dpms 308 to me, you should explain that instead of just calling it an ar10. Ar10 pattern is different from dpms pattern and it would help for novice and beginner builders so they don’t end up getting mixed up.

  6. Do you check for head spacing? I haven’t yet but I hear how “important” it is. I have been doing this exact build (my first full build) but with WC barrel and gas system. Enjoyed the videos!

  7. Get the gas block to where it’s aligned correctly on the barrel, tighten the set screws to where they DO leave a mark on the barrel. Remove the gas block, dimple ( drill) the barrel where the set screws left their mark, reinstall the gas block, locktite the set screws. Support the gas block while you are installing the gas tube roll pin, don’t use a center punch as a starter punch and don’t use the side of the hammer, use the hammer head to hit the punch. Your welcome.

  8. Why did you select the heavy barrel? Just curious as I'm trying to decide on a barrel. I would like something that will last a long time, but also I want to carry it without it being too heavy.

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