Airsoft Website 20mm Picatinny Rail Scope Mount Base For WE KSC Tanaka Tokyo Marui G17 G18C Series Pistols20mm Picatinny Rail Scope Mount Base For WE KSC Tanaka Tokyo Marui G17 G18C Series Pistols Airsoft Made out of Aluminum. Top 20mm weaver rail for installing scope, flashlight, laser, and dot sight. Direct Attach to Pistol. No Drilling is needed to install top rail mount on your pistol. Easy Installation (locked by 2 screws at the bottom of the mount). 110mm Rail. Suitable for Tokyo Marui G17 G18C, KSC G17 G34 G18C, WE G17 G18C G34 G35, Tanaka G17 G34