TRUGLO | XR21 Red Dot Sight | 3 MOA | 21x16mm

The TRUGLO XR21 is a compact open red-dot optic engineered for use on optic-ready handguns and lightweight long-gun setups. It offers a 3-MOA aiming point on a multi-coated 21 x 16mm optical window and is designed for fast target acquisition with unlimited eye relief. Digital brightness controls, a motion-sensing wake function and an auto-off feature extend battery life while providing straightforward operation.

Applications: everyday carry (EDC) on RMSc-compatible slides and high-volume range or competition shooting where quick sight acquisition and compact footprint are priorities.

Product Specifications

• The manufacturer is TRUGLO.
• The model name is XR21 Red Dot Sight (3-MOA).
• The UPC is 788130031650.
• The reticle type is a 3-MOA red dot for precise point aiming.
• The optical window measures 21 x 16mm and is multi-coated.
• Compatibility is listed as RMSc-compatible optic-ready pistols and common mounting plate bolt patterns.
• Brightness control uses digital push-button operation with 10 brightness settings.
• The unit remembers the last used brightness when powered on.
• The sight includes a motion-sensing “wake” feature.
• Windage and elevation adjust at 1-MOA increments and include locking adjustments.
• The housing is CNC-machined aircraft-grade aluminum for durability.
• The optic provides unlimited eye relief.
• An auto-off feature powers the unit down after 4 minutes of idle to conserve battery.
• The design is rated IPX7 waterproof.
• A Picatinny rail mount is included and a CR1632 3V battery is supplied with an advertised 20,000+ hour life.

The XR21 balances a compact footprint with features expected in modern micro red-dots: a clear 3-MOA aiming point, ten brightness levels including memory recall, and a waterproof CNC-machined body. Its RMSc-compatible footprint and included rail mount make it a practical choice for shooters fitting optics to optic-ready slides or compact training rigs. The combination of simple controls and long battery life makes it suitable for everyday carry optics and competitive or precision-oriented shooting sessions.