The Zero Tech Optics THDRS28L Thrive HD Red Dot Reflex Sight delivers a clean, fast sight picture in a compact, low-mount package. Built around a 1x 28mm x 20mm window with a crisp 3 MOA red dot, it uses an RMR footprint and includes a Picatinny-compatible base for easy mounting on pistols, rifles, or shotguns. Multi-coated lenses with specialized AR coating help minimize distortion while maintaining a bright, clear view.

This model features advanced shake-awake technology with auto on/off, up to 50,000 hours of battery life from a CR2032 cell, and unlimited eye relief for flexible head position. Waterproof, fog proof, and shockproof construction makes it well suited for range use, training, and hunting where quick target acquisition is critical. The Thrive HD line reflects ZeroTech’s focus on practical innovation and dependable optics for modern shooters.

Key Features:

• Manufacturer: ZeroTech
• Model: THDRS28L Thrive HD Reflex Sight
• Magnification: 1x
• Reticle: 3 MOA Red Dot
• Objective Size: 28mm x 20mm
• Optic Coating: Multi-Coated With AR Lens Coating
• Eye Relief: Unlimited
• Adjustment Size: 1 MOA
• Battery Type: CR2032
• Battery Life: Up To 50,000 Hours
• Mount Type: RMR Footprint With Picatinny Low Mount
• Features: Shake Awake Auto On/Off, Waterproof, Fog Proof, Shockproof
• Length: 1.77"