The Burris Fastfire E 3.5 Moa Red Dot is an enclosed-emitter reflex optic designed to provide a protected 1x illuminated aiming point for rapid close-quarters target acquisition. Built to withstand harsh environments, its fully sealed housing completely isolates the internal LED emitter from rain, dust, mud, snow, and lint. Operating as a purely optical sight powered by an internal CR2032 lithium battery, it has no electrical components that interact with domestic 240V power grids and requires no SAA/RCM certifications or external charging adapters.

This optical sight features an "Always On, Always Ready" function combined with a built-in 13-hour auto-reset timer that reverts the reticle to a bright level 7 setting for immediate visibility during sudden lighting transitions. For secure operation under demanding conditions, users can activate a complete brightness lock and manual button lockout to prevent accidental setting shifts.

Key Features

• Enclosed-Emitter Design: Fully sealed physical housing prevents environmental debris and moisture from blocking the projection path of the LED reticle.
• Advanced Optics: Equipped with a 22 mm x 17 mm (0.87 in. x 0.67 in.) sight window featuring aspherical, glare-resistant lenses.
• Illumination Adaptability: Offers 10 total brightness settings, including 8 daylight and 2 night-vision compatible levels.
• Recoil Tolerance: Engineered to handle the heavy shock of slide-mounted semi-automatic handguns, 12-gauge shotguns, and carbines.
• Standardized Mount: Designed around the standard Aimpoint® ACRO® footprint for broad compatibility with optics-ready platforms.

Specifications

• Magnification: 1x
• Reticle: 3.5 MOA Red Dot
• Sight Window Dimensions: 22 mm x 17 mm (0.87 in. x 0.67 in.)
• Physical Dimensions: 46 mm x 36 mm x 32 mm (1.81 in. x 1.42 in. x 1.26 in.)
• Weight: 69.6 g (2.45 oz)
• Battery Life: Up to 60,000 hours of continuous runtime on setting 5 (CR2032 battery)
• Adjustment Range: 100 MOA total capability in precise 1 MOA click values
• Waterproof Rating: IPX7 certified (submersible up to 1 meter for 30 minutes)
• Operating Temperature Range: -25°C to +60°C (-13°F to +140°F)
• Storage Temperature Range: -30°C to +60°C (-22°F to +140°F)

Who is the Fastfire E 3.5 Moa Red Dot for?

• Optics-ready semi-automatic handgun shooters — requires a 3.5 MOA Red Dot to provide a highly visible and rapidly trackable aiming point that handles the continuous slide-recoil of semi-automatic handguns.
• Tactical law enforcement officers — relies on up to 60,000 hours of continuous battery runtime to ensure this enclosed red dot sight remains constantly active and protected from extreme environmental elements in operational fields.
• Home defense carbine and shotgun users — utilizes the 100 MOA total windage and elevation adjustment capability of this enclosed red dot sight to achieve precise zeroing on high-recoil 12-gauge shotguns or carbine platforms.

Less suitable for: Precise targeting at distances beyond 100 meters, where a traditional magnified rifle scope or low-power variable optic (LPVO) is required. It is also less suitable for subcompact or deep-concealment handguns where minimizing slide mass is critical, where an ultra-lightweight open-emitter micro-dot (weighing substantially less than this unit's 69.6 g) is better suited.