Lowering The Glock Ejection Port For Scope Mounts Posted on November 13, 2014 by LMG FireArms The ejection port is lowered .100″ to allow the casing to eject lowering clearing the scope mount. The curvature of the factory ejection port is maintained Once completed the cut is coated with black Cerakote or desired finish. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related