The KHX Custom/RL (OI) has a milled slide that has a Holosun HE507C-GR-X2 optic installed. Equipped with 1913 Picatinney accessory rail & Stiplex front strap stippling for extra grip confidence. – Specifications – Height (inches) 90° to barrel: 5.25 – Weight (ounces) with empty magazine: 39 – Length (inches): 8.7 – Magazine capacity: 9 – Recoil spring (pounds): 12.0 – Full-length guide rod – Frame – Material: Stainless Steel – Finish: Gray KimPro II – Width (inches): 1.28 – Slide – Material: Stainless Steel – Finish: Gray KimPro II – Front serrations – Barrel – Length (inches): 5 – Material: Stainless Steel match grade – Stainless steel match grade bushing – Twist rate (left hand): 16 – Sights – Holosun HE507C-GR-X2 optic installed – Grips – Hogue Magrip G-10 Mag Grip – Trigger – Premium aluminum – Factory setting (approximate pounds): 4.0-5.0