The Burris Fastfire E 3.5 Moa Green Dot (manufacturer model number 300267) is Burris's first fully enclosed emitter reflex sight. Designed to deliver absolute environmental reliability, this compact optic provides a parallax-free 1x viewing experience for rapid target acquisition. Built with a nitrogen-purged, monolithic machined-aluminum housing, the Fastfire E completely seals the optical pathway to prevent water, mud, lint, snow, or debris from blocking the internal LED diode.

Key Features

• Enclosed Optical Pathway: A sealed, nitrogen-purged aluminum housing ensures the 1x green dot reticle remains visible regardless of rain, dust, or mud.
• Advanced Glass Lenses: Premium aspherical glass lenses offer a glare-resistant, distortion-free, and parallax-free sight picture.
• Optimized Illumination: The crisp 3.5 MOA green dot features 10 brightness settings, including 8 daylight levels and 2 night-vision-compatible levels, complete with a manual brightness lock.
• Side-Loading Battery: The CR2032 battery compartment is accessible from the side of the unit, allowing users to swap batteries without removing the optic or losing zero.
• ACRO Footprint Compatibility: Built on the standardized Aimpoint ACRO footprint for direct mounting to compatible pistol slides, carbine mounts, and shotgun plates.

Product Specifications

• Model Number: 300267 (also listed as BO300267)
• Reticle: 3.5 MOA Green Dot
• Magnification: 1x
• Dimensions: 1.81 inches (length) with a 22 mm x 17 mm viewing window
• Weight: 2.45 ounces
• Battery Life: 50,000 to 60,000 hours at medium brightness settings
• Adjustment Range: 100 MOA total windage and elevation (1 MOA click adjustments)
• Mounting Interface: Aimpoint ACRO footprint

Who is the Fastfire E 3.5 Moa Green Dot for?

• Concealed carry and duty pistol shooters — requires a lightweight, low-profile optic, and this enclosed emitter reflex sight adds only 2.45 ounces to the slide, maintaining fast handgun cycling while protecting the internal LED from body lint and sweat.
• Pistol-caliber carbine operators — benefits from an ultra-reliable, always-on battery life of up to 50,000 to 60,000 hours, ensuring the Fastfire E 3.5 Moa Green Dot is instantly ready for home defense or rapid-fire competition.
• Shotgun hunters requiring environmental reliability — provides a ruggedized, sealed chassis with 100 MOA of total windage and elevation adjustment to withstand heavy 12-gauge recoil while keeping the reticle clear of rain and debris in wet fields.

Less suitable for: Target engagements extending beyond 100 to 150 meters, or situations where required trajectory corrections exceed the integrated 100 MOA adjustment window. For these scenarios, a magnified rifle scope or a dedicated long-range optic is better suited.