Another Complete Gearbox Guide video from Team Blacksheep and for this episode it is the G&G M4 with a takedown and assembly guide too... "In this video Brian will show you how to take apart the G&G M4 and then put it all back together. Great video to teach you the needed steps to install new parts for upgrades.

Make sure you LIKE- COMMENT - SUBSCRIBE and SHARE with your friends that need to see this video."