Features Fully licensed Unity Tactical trademarks Dupont reinforced polymer construction Comes standard with a rail-grabber clamp Compatible with lower 1/3 co-witness picatinny mount red dot optics Light weight, 70% weight of the metal version Unity Tactical FAST is a series of optic mounts that provide end users with a more rapid visual processing of the battlefield by ensuring an ergonomically correct heads-up posture. Further, they provide faster and easier dot/reticle acquisition while wearing night vision goggles, protective masks, plate carriers and other gear.It provides an elevated M1913 Picatinny platform for direct attachment of optics such as EOTech EXPS®, Leupold LCO®, Vortex UH-1®, and other lower 1/3 optics*This version of the PTS Unity Tactical FAST Riser is made from Dupont Zytel polymer with metal rail grabber and screws. The primarily polymer construction yields a more affordable cost while maintaining the strength and rigidity of high quality Dupont Zytel branded polymer with minimal compromise to durability and performance. Manufacturer: PTS / Unity Tactical Licensed