This is a LUCID OPTICS Magnifier known as the 2x-5x Magnifier, model L-2X5X.
LUCID OPTICS is proud to offer the world's first variable magnifier for red dot sights. Now the operator is able to transition quickly between a CQB operation to a designated marksman capability in an instant with the same weapons platform. LUCID OPTICS 2x-5x Variable magnifier mounts behind any red dot sight (with the right mount). This high-quality optic offers crystal clear optical performance" and maintains an expansive field of view with a comfortable eye relief through the entire magnification range. NOTE: The 2x-5x Variable Magnifier from LUCID OPTICS has been updated to offer an ocular focus ability!
Features:
• Fully Multi-Coated Lenses
• 100% Shockproof & Waterproof
• 100% Fog proof
• 2x – 5x Magnification
• 30mm Tube
• Objective Lens: 21mm
• Adjustable Dot Centering
• Weight: 7.75oz
• FOV @ 100yds – 40ft – 25.5ft
• Eye Relief: 4?
• Compatible with ANY Red Dot
• Limited Lifetime Warranty