ZeroTech Thrive HD THDM21G | 1x | 3 MOA Green Dot | RMSc

The ZeroTech Thrive HD THDM21G is a micro reflex sight designed for compact pistols and lightweight backup installations. It uses shake-awake technology and an RMSc-compatible footprint to provide an always-ready aiming point in a minimal package. The sight offers a 3 MOA green dot reticle in a 21 x 15 mm viewing window and runs on a common CR2032 battery. Intended applications include everyday carry (EDC) use and as an ultra-lightweight backup optic for compact platforms.

Product Specifications

• The manufacturer part number is THDM21G.
• The UPC is 9334046005561.
• The battery size is CR2032.
• The maximum battery life is listed as up to 150000 hours.
• The magnification is 1x.
• The objective/window measures 21mm x 15mm.
• The reticle is a 3 MOA green dot.
• The optic coating is specified as Multi-Layer AR.
• The footprint is the Shield RMSc for compact pistol compatibility.
• The weight is listed as 0.67 oz.
• The unit is described as fog proof, shock proof, and waterproof.
• The sight includes auto shutoff and auto on functionality.
• The housing is fitted with a moulded rubber cover.
• Brightness is adjustable to suit varying light conditions.
• The design incorporates shake-awake technology to conserve battery when idle.

Compact, lightweight, and RMSc-compatible, the Thrive HD THDM21G delivers a practical green-dot aiming option for shooters who need a small, reliable reflex sight. Its long battery life and adjustable brightness make it suitable for daily carry or as a minimalist backup optic, while the micro footprint keeps overall weight and profile low.

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