My M4 setup for Narcos next weekend Learned how to open and tune up the gearbox too.. : r/airsoft

Gearbox stuck in receiver : r/airsoft

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My intro into “anything but an m4” airsoft : r/airsoft

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is this hop up any good : r/airsoft

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JG M4 RIS Upgrade Parts (The Airsoft Warrior Tech Saga-Part 2)- AirsoftWarrior.net

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My M4 setup for Narcos next weekend Learned how to open and tune up the gearbox too.. : r/airsoft

My gearbox actually exploded! WARNING DON'T RUN A 45K RMP MOTOR ON A STOCK GEARBOX! : r/airsoft

AEG Gearbox Takedown : 14 Steps - Instructables

Quick Tips - How to Change an M4 or M16 motor!