The Fast MicroPrism mounts Primary Arms MicroPrism optics and other industry-standard mini-prism optics at a 2.26 inches optical centerline from the rail. It includes a standard two-cross bolt rail clamp and offers compatibility with the Fast QD (quick detach) Lever for easy attachment and removal. Fast optic mounts are designed to improve sight picture acquisition speed compared to standard mounts. By positioning optics at a 2.26 inches optical centerline from the rail, they promote a more ergonomic heads-up posture for rapid visual processing on the battlefield. This setup facilitates quicker dot/reticle acquisition, especially when using night vision goggles, protective masks, plate carriers and other tactical gear.