Guarder Stainless Steel Recoil Spring Guide For Tokyo Marui D.O.R GBB (Silver) Net-Weight-(g)_194 "Zero Resistance" cylinder which means

"Zero Resistance" cylinder which means it will be incredibly smooth

Under the bag you can find a weather proof cover which can be easily wrapped over the bag to protect it from the rain

it allows for programming

and the same greater trigger response

Guarder Stainless Steel Recoil Spring Guide For Tokyo Marui D.O.R GBB (Silver) Net-Weight-(g)_194 "Zero Resistance" cylinder which meansGuarder Stainless Steel Recoil Spring Guide For Tokyo Marui D. O. R GBB (Silver)CNC Stainless Steel Construction Hi Capa 1911 Recoil Spring GuideDesign For Upgrade the Original Parts More DurableSuitable For Tokyo Marui Hi Capa D. O. R. Series Gas Blow Back GBB Pistol Airsoft Guns