Home CMMG Step by Step AR15 Lower Receiver Build Guide | Aero Precision M4E1...

Step by Step AR15 Lower Receiver Build Guide | Aero Precision M4E1 Lower

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The “tool” is called a clevis pin 1/4″ x 2″
Buy the M4E1 lower here:
M4E1 MOE Lower Parts Kit:

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20 COMMENTS

  1. I just used this video to put together my M4E1 Lower, very helpful and thank you very much. My one criticism would be to mention that if you had a drop-in trigger like my Rise Armament, you would want to install that BEFORE the safety selector. Otherwise, you'll have to undo the Grip and reinstall!

  2. Tip for front Take Down Pin Install: Use a 3/16 ball Allen wrench pushed through from the left side and a needle nose pliers to push your detent pin into your receiver. Push your Allen wrench into the left side and the curved part of the ball will hold the pin and spring and “roll” right out when you insert your Take Down pin in! Easy!

  3. Question, sir, do any of the parts on a lower need any greasing or lubrication? How about on an upper besides the barrel nut? Also, I've heard that some parts have a coating from the factory that needs to be removed before assembly. If you could shed some light on these questions, that would be great. Thanks for the video!

  4. Excellent instructions. Thank you fo the walk through. Easy to understand and follow. My only FUBAR was the magazine catch button was not threaded. I had to order another one. I was able to assemble everything else but the magazine release and bolt catch. Now a waiting game.

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