CS Airsoft continues with his upgrades on airsoft Glocks, showing how he upgraded the lower frame and slide of the WE Airsoft G17 Gas Blowback Pistol... "Today I will show you how to install the Guarder slide and frame on a WE G17. The Guarder Upgrade Parts not only have original Glock markings but are also of better build quality. If you have any questions don't hesitate to write them in the comments."