AR Gas Block/Gas Port Installation Thumb Screw

What do I do if my new barrel does not have a dimple for the gas block? Doing a build for the first time.

For humid environments instead of red loctite what about loctite 246? It's a medium strength high temp thread locker (higher temp version of 242/243)? I plan to use this for gas block screws and muzzle devices so I'd be curious to hear Chad's thoughts on it. Thanks!

👍👍

Question if you don't mind. I have a m400 with the pined gasblock. Need to replace it for a low-pro block. Changing the handguard is why. Should I go back with a pining block or can I us a setscrew style.

Love the shorts.

I've been seeing alot of videos of people installing gas blocks and not following the manufactures instructions of using gauging strips of .025 for example and basically hacking it in with no borescope or other confirmation you have the best line up.

Whispering voice "Bore scope" 😂 she's a keeper. So supportive 🙏🙌

Some years ago I saw someone who had a tool that looked like a gas block but used a tapered metal pin to align the gas port while one of the set screws held the tool in place while you could drill a dimple into the second screw hole on the bottom of the barrel. have you heard of such a tool?

I have 2 rifles on the workbench right now that didn’t make it through a rifle class last weekend due to improperly installed gas blocks. Gonna have to forward this video to the owners to show them an easier way to do it right.

👍👍👍

i have learned so much over just 3 videos. thank you.

I made a dimpling jig out of another gas block. Squared the rear screw hole to a drill bit in a drill with a drill vise and drilled straight through.
Tapered a pin to center the gas block to the vent hole, then locked the jig down the same way you showed.
Center the drill over the rear screw hole and gently locate the dimple.

« a borescope 🤫 »

Inch or foot pounds? Video for Rocksett removal?

Be pretty cool to see you do a vid on dimpling the barrel

Learn something today… ☑
Thank you!

Always learning something new from you! Thanks for sharing 👍

20 inch pounds?

Are you still planning on doing a video showing how to remove rocksett? Im very interested to see your method. I've always stayed away from it due to worries about removing it.

As a mechanical engineer I can strongly advise AGAINST mixing stainless steel screws with alloy steel like AISI 4140 or 4150. What happens is called a cathodic reaction where the stainless steel leaches ions from the alloy screw and hastens corrosion even faster than normal. The only thing that can prevent that is a protective coating but is not applicable in this case.
I spent almost 4 years as a lead engineer for submarine manufacturing and saw this condition first hand on a lot of fabrication tools where people would mix fasteners (Alloy & SS), turning every thing into a rust pile.
The other reason it can be very bad is a condition known as galling. If raw (uncoated) SS contacts and alloy under pressure they will cold weld together making disassembly very difficult.
Some anti-seize can sometimes prevent that but not reliably.

416SS & 17-4PH SS may not exhibit these characteristics compared to 4140 & 304SS but I don’t know anyone making gas blocks from these flavors.

This channel and these quick hits are a gift. Thanks, man!

Torque spec sheet would be cool to have.

Great information as usual

I really appreciate all the recent content. Learning alot. And for free. Thank you

…good wife…heard her coaching you..

Great, great info Chad.

Chad would be totally hosed without the voice whispering in his ear.

Flooding us with videos and I LOVE IT… keep em coming

Please make a short video about installing and F stamped front sight.

Time to make a trip to the local hardware store!

First commitment 😊