Complete Guide To GBB Upgrades Part 1
OptimusPrime
20 Jul 2017
Something for you to bookmark if you are planning to do upgrades on your gas blowback. TopHatRunner Airsoft now has part 1 of the Complete Guide to Upgrading Airsoft GBB online and this covers gas magazines and springs. This is a three-part video so there are two more videos to be produced.