In this video, Caleb covers the first installment of the “How to Build an Accurate AR Series.” The guide starts with a candid admission that some recommendations may differ from what viewers might have learned elsewhere, but promises to explain the rationale behind each suggestion. The video meticulously details the selection and assembly of components for building an accurate AR-15, including:
-The choice of a SilencerCo Billet upper receiver for its precise fit with the barrel and quality machining.
-The selection of a Brownells Mark 12 barrel, emphasizing the need for a premium barrel when accuracy is a priority.
-The utilization of a Geissele Mark 18 handguard for its rigidity and versatility, featuring an ARCA rail for easy bipod and tripod attachment.
-The importance of a quality adjustable gas block, with the Rifle Speed Adjustable Gas Block highlighted for its ease of adjustment and maintenance.
-Tips on selecting a quality upper receiver and what features to look for, such as proper machining and alignment.
-An explanation of why bedding the barrel may not be necessary for modern AR builds, providing insight into the process and its impact on accuracy.
The video concludes with a step-by-step guide on lapping the upper receiver to ensure a true and accurate fit with the barrel, including a detailed tutorial on using Brownells lapping tools and techniques for achieving a perfect finish.
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You lost me at billet upper receiver
I understand the receiver lapping but what if the barrel extension isn’t concentric?
Thank you for the video. If you decide to go with an upper receiver that uses a thermal fit (assuming that it has a slight smaller diameter since it needs to be heated to open it up) will the upper receiver lapping tool still fit?
48:19 That Keymo muzzle device is designed to be timed with the ports horizontal, not vertical. The top of the brake where the JMAC logo is should be at 12 o’clock along with the top Keymo lug notch. This is so that when you install the suppressor, the lug with the corresponding notch on the Keymo collar is a reference to match up the correct lug with the correct notch. Its not like a tri-lug where you can just put any lug in any notch. Also, if you ever shot that brake laying prone with the ports vertically timed like that, youd blow up enough debris with the exiting muzzle gasses to plant a garden.
I like to think that he's tired after a night of Tarkov here, but in reality this was probably filmed like 6-8 weeks ago.
This is gods work
Damn I want that Geissele rail nice job Caleb
Good video. Cue the people reeeing about not loosening with the torque wrench
For torquing the flash hider or muzzle break and also removing the same; some people have talked about using a fixture that has a name like action receiver rod vs what you were using. Any thoughts about it.
An obvious general observation is that a hobbiest that is more like a shade tree mechanic as myself will never have some of the tools that were demonstrated such as a bore camera and some of the other goodies that were on display.
How about a video showing how to do a reasonable job with what tooling most people can have. If I want a super accurate rifle it looks like I will have to employ the services of a professional with the right tools, skills, and knowledge.
Fantastic step by step. What a masterclass. Thanks for sharing!
Great and informative, can you cut the length down a bit maybe 20min segments?
You would think a company as big as Brownells could afford a good camera that doesn't get all fussy when you zoom in on something
Criterion and SOLGW both suggest bedding the barrel.
very entertaining and informative video!
My man has an AT4 just chilling in the safe
What a great video! Thanks brother, I learned a few new things here!
Lapping a receiver makes no sense, the purpose of lapping is to mate part surfaces together. The receiver has just been mated to the tool, not the barrel.
Love these type vids
Gas block torque?
Ha, caught Caleb doing something wrong. You’re supposed to clamp the Wheeler upper vise block by the wider portion of the block. It makes sense to clamp it at the narrower portion but the instructions say otherwise.
Great video! Thank you!
No Rockset for muzzle or threadlock for hand guard screws, or gas block?! Didn’t everyone feel the world stop spinning
Look out , BOB Ross- there are no mistakes, only happy little accidents
I was about to ask about lapping the upper reciever but Caleb beat me to it. Thanks.
Just in time for doing my very first ever build happening soon! Super stoked!
Great video!!👍🏼🤩🤙🏽
What is the reasoning/purpose of having the torque wrench 90 degrees?
Heck! You draw better than me.
Excited for the building an accurate AT4 series
Dude, you just take WAY too long to explain things. I'm not joking when I say this should have been a 20 minute video.
"there's not 4 forges, bro"
I bet you made someone really mad with that one 😂
Blackout defense 16" elite lead lapped barrel, and Cryptic Coating bcg .. decent trigger sub moa all day. Guarantee
Awesome video, you have an error on the description. The barrel is a Mark 12 vs what you have, and Mark 18. No offense but I'm sure that has confused some people. I had to do a double take.
I always enjoy these “do it yourself” videos. I often notice that at least one seemingly significant step is referenced but not covered. In this case you mention that you will use a bore scope before drilling the barrel. This seems like something we should see and a significant step. I’m guessing you’ll say this step is in another video so, if that is true, maybe a link inside the video would help for such a seemingly significant step? If the step isn’t in another video, would you consider making one? I do appreciate the content.
MK18? Did he mean to say MK12?
Love the AT4 in the background 😊👍🏻👍🏻👍🏻
0:43 I'm already super triggered
O’boy the arm chair armorers are coming out of the woodworks like flies flicking to the poo. Clearly he didn’t use a “reaction rod” or “season” the receiver threads- From the experts!!
thanks for the intel,, great vid Vinni van Gogh… dont worry, we wont tell the art teachers
Can you give us a run down on your tool box?