Radian Weapons Guardian + Six Features The Radian Weapons Guardian + Six is built around Radian s TRU-SEAL technology which uses O-rings on the mounting screws to hold the plate watertight against the slide. This design eliminates the need for a separate sealing plate sealing out moisture and preventing corrosion from reaching the mounting threads over time. The STUD-LOK threaded stud and nut mounting interface gives this guard far more thread engagement and hold down power than typical optic mounting screws. The result is a mounting system with increased shear resistance built to stay secure through the recoil cycle of a defensive or duty pistol. Integrated into the Guardian mount are the SIX back-up sights which provide a reliable path to precise target acquisition if the red dot optic ever fails or malfunctions. These sights feature an anti-glare anti-snag ultra low co-witness design that lies inconspicuously out of the way until a shooter needs to deploy them. The aluminum frame is finished in black and built to fit a Glock MOS slide cut to the Holosun 407C/507C footprint. Mounting hardware is included making the Guardian + Six a complete optic guard and back-up iron sight solution for an optic-equipped duty or carry pistol. Radian Weapons Guardian + Six Specifications Manufacturer: Radian Weapons Model: Guardian + Six Type: Optic Guard Material: Aluminum Color: Black Compatible Hosts: Glock MOS Optics Footprint: Holosun K Includes: Mounting Hardware Weight: 0.2 lbs Available At: GrabAGun