Vector Optics Frenzy-S 1x17x24 MOS Multi Reticle red dotThis red dot uses the Shield RMSc footprint standard. Maybe The Lightest Full Metal Pistol Red Dot Sight in the World Only 19g 0. 67oz Weight. Multi Reticles, 8 Levels and 2 Night Vision Red Dot, Slim & Low Profile, Snag Free Design. Complete User Control with Motion Sensor Feature (2 Minutes Auto Shut Off), On Off Switch. Standard Window Size 17x24mm 0. 7x0. 9in, 26mm 1in Width, MAG Footprint Pistol. 20,000 Hours Battery Runtime for Weakest Visible