How to Assemble an AR-15 Upper Receiver: Full length rail install

***As always, this video is meant only as a guide. If you are not comfortable with your abilities, please bring your firearm to a licensed gunsmith. ***

In this video I will quickly show you how to assemble and AR-15 upper receiver. I am using a BCM full length hand rail as well as a BCM 16″ barrel and a CMMG upper receiver. Most hand rails will install the same way, but may have different barrel nuts and attachment methods. If you have any questions, please let me know in the comments below.

Parts used in this build:
BCM 15″ Hand Guard
BCM 16.1″ 5.56 Barrel w/1:7 twist
CMMG Upper Receiver assembly
CMMG Mid-Length Gas tube
YHM Low Profile Gas Block
NCS 5.56 Muzzle Brake

Recommended Tools:
AR-15 Armorer’s Wrench
Upper Receiver Vise Block
Vise
Torque Wrench
Punch Set
Starter Punch Set
Rubber Mallet
Gunsmith Block
Wheel Bearing Grease
Blue Thread Lock

Thanks for watching! Soon I will do a lower receiver detailed assembly guide. Stay tuned!

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P.O. Box 364
Jewett City, CT 06351

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