Anglian Airsoft: Upgrading ICS S3 Gearbox
OptimusPrime
17 Nov 2020
Tips from Anglian Airsoft in doing upgrades on the ICS S3 Gearbox... "In this video we take the ICS S3 gearbox and give it some quality of life upgrades as well as a new trigger and ambidextrous mag release button on the lower receiver. Its a few fun and easy upgrades that anyone can do!"