Home CMMG Time to Build Your AR-10 Upper & Lower? Tools, Tips, Close-Up’s &...

Time to Build Your AR-10 Upper & Lower? Tools, Tips, Close-Up’s & How To Do It Right. | Episode #3

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Looking for some step-by-step & how to build your AR-10 info? You’ve come to the right place…for now! We’ll walk you through all the parts and pieces to build your AR-10 Upper and AR-10 Lower… Let’s Go Build!

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*Ultimate AR-15 Beginner’s Guide*

*Complete AR-10 Builder’s Guide*

00:00 – Intro
00:40 – Time To Build
01:20 – Tool Breakdown
03:44 – AR-10 Upper Assembly
03:56 – Barrel Install
04:35 – Forward Assist Install
05:07 – Dust Cover Install
06:04 – AR-10 Lower Build
06:55 – AR-10 Lower Parts Kits
07:30 – Pivot Pin Install
08:24 – Magazine Catch Install
08:54 – Bolt Catch Install
09:59 – AR-10 Trigger Install
11:18 – Safety Selector Install
12:41 – Rear Takedown Pin Install
13:35 – Grip Install

We strive to provide the growing AR-15 shooting community with helpful, fact-driven information about the AR-15 & AR-15 style firearms and accessories to do our part in bolstering a more well-informed community and safer when handling, building or shooting their personal firearm. Let’s face it, we all have to start somewhere when it comes to becoming a firearms expert. Our goal is to help you get there one small step at a time. **The purpose and content of this video is to provide general information regarding the products and their applications on any/all related firearms that strictly comply with all federal, Minnesota state, and local laws. The viewer expressly agrees that AT3 Tactical LLC; its officers, directors, employees and agents shall not be liable for any damages or losses related to the products and information provided in this video and hereby agrees to hold the foregoing harmless from any such losses or damages. AT3 Tactical LLC is a Federal Firearms Licensee.

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26 COMMENTS

  1. If you installed the ejection port door before you installed the barrel and barrel nut. You don't have to hammer the ejection port door rod in.
    Tip to install the pivot pin, use a 3/32 allen wrench, push the detent all the way down. And then use the pivot pin to engage the detent and pull the allen wrench out. At the same time push the pivot pin in and done.

  2. Aero Precision M5 is based on a DPMS LR308 not an AR10. Next best name is AR308 but calling it an Armalite Rifle is also incorrect. The M5 also uses a "high pattern" upper receiver that uses the high pattern hand guard if you don't want a mismatch in rail height. Most true AR10 parts are not compatible with a DPMS pattern and the industry is causing all kinds of problems by not using standard naming conventions.

  3. God you sound like a Democrat and ATF got together tell me what your definition of a A.R. 10 is for which that’s a AR 308 upper and lower. Yeah I’m going to keep ready on you if you make a proper video with the proper names you made for a newbie but you’re not fooling his old cat

  4. You should change your video AR 308 build because you labeled it A.R. 10 build for which the AR, upper and lower are not A.R. 10. Yes, your knowledgeable doing a build. What do you see to make yourself less intelligent on the difference between A.R. 10 and air 308 not to sound like a liberal in the gun world being politically, correct but you’re really giving out false information confusing people who are getting into the build game informing them wrong information of what’s a AR 10 in AR 308

  5. Be wary of bear creek if you are looking to start an ar10 build!
    Purchased, what I thought, was the perfect upper for my build. Put it all together and then the physical upper was out of spec! It kept sending the charging handle back like it was a reciprocating charging handle! I sent it back, and the looked it over, and replaced it with a supposed proper upper. The lugs for the take down pins are out of spec on the new upper, I have to take it apart and put it back with a punch and hammer! Wont even bother with them again! I'm going to get a pa10 gen3 upper to replace this current one instead. I've yet to have spec issues with palmetto parts.

  6. I was buying AR 15s before Bill Clinton was president so over the years, I got into buying the parts then assembling ARs.
    Now I have got into the 80% lowers, and I have to say I wish I would have gotten into the 80% lower build long ago.
    I can have an AR 10 or 15 80% lower finished into a working lower in 1 hour and I don't need corrupted criminal and communist Bidens ATF permission to build my AR guns plus the commie fascist government hasn't a clue I own these ARs.
    I have used something like 5 80% lower web sites with every 80% lower finished is perfect and works.
    The 80% jig I bought is from 80% arms.

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