The ZEV Z17 stainless steel slides are manufactured from a single billet of 17-4 stainless steel to tighter tolerances than factory slides for increased consistency in barrel lockup which improves accuracy. All ZEV slides have our patented optic cut which features posts allowing for more thread area keeping your optic securely mounted to your slide. This model fits the G17 and has a length of 7.25", width of 1.0", and weighs in at about 10.83 ounces. It features a DLC finish, lowered ejection port to aid in ejection of brass, and a RMR adapter plate is included