Vortex VMX-3T 3x multiplier optic for use on weaver rail. Optic includes flip mount to quickly move optic into position. Vortex has an unconditional lifetime warranty and will repair or replace without question. Selling for $130. Description from Vortex website: Simple, fast, effective--the VMX-3T Magnifier will work with any of our red dots but it is not recommended for use with the prism scopes. 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. mounted and used this optic one time then decided to go to a regular scope and no longer need this multiplier. I'm located in Tigard and can meet in the surrounding areas. Thanks for looking.