www.ReplicaAirguns.com UPDATE: All Umarex Glock 17 Gen 4 and Glock 19 Gen 3 GBB Airsoft Pistols now ship with the Shorter Barrels!! In this YouTube Update Preview Video I go over a couple new Umarex Glock Licensed GBB Airsoft Pistols that I feel require a bit of explaining. Essentially we already stock these same Umarex Glock Blowback Airsoft Pistols, but in the CO2 magazine versions. The Umarex Glock 17 Gen4 and Umarex Glock 19 Gen3 I highlight in this video come with Green Gas Magazines and both have extended inner barrels to allow for Canada import to increase the velocity to our over 360 fps using a .20 gram Airsoft BB. sually Green Gas Airsoft Pistols with extended inner barrels will have the ability to unscrew the extension and will even come with a shorter replaceable barrel but in this case all you get is the longer one piece inner barrel. My suggestion is to either cut down the long inner barrel to fit within the out barrel or purchase a short inner barrel when they are available. At the moment we do not have either one of these Airsoft Pistols listed in our Replica Airguns Stores but they should pop up shortly! Buy Glock Airguns in Canada: https://www.replicaairguns.ca/search?q=glock Buy Glock Airguns in the US: https://www.replicaairguns.us/search?q=glock Read full article here: https://www.replicaairguns.com/2021/7/9/umarex-glock-17-gen-4-glock-19-gen-3-gbb-airsoft-update-video