Simple, fast, effective. The push button design of the VMX 3T engages and disengages the flip mount, allowing the magnifier to lock in place. The result, 3x magnified or unmagnified views at will. Optics are fully multi coated for optimal light transmission. Lightweight and tough, hard coat anodized machined aluminum construction ensures durability. Internally nitrogen purged for reliable waterproof/fogproof performance. Ultimate magnified versatility for virtually any AR height red dot sight. The VMX 3T Magnifier will work with any of our red dots but it is not recommended for use with the prism scopes. Allows for lower 1/3 or absolute co witness mounting heights and is ideal for shooters who want to increase the effective range of their red dot sight.