The Burris FastFire C (Model BO300239) is a micro red-dot reflex sight engineered specifically for sub-compact and micro-compact semi-automatic pistols. Designed for rapid, close-quarters target acquisition, this optic features a rugged, reinforced composite polymer housing that delivers high durability while maintaining an exceptionally low profile. Its ultra-low deck height allows for absolute or 1/3 co-witnessing with standard, factory-height iron sights, making it a reliable choice for everyday self-defense applications.

Key Features

• Always On Technology: The sight remains continuously active and ready for immediate engagement after the initial power-up.
• Intelligent Auto-Bright System: An integrated sensor automatically adjusts the 6-MOA dot intensity based on surrounding light conditions, while also allowing manual cycling through 5 day-brightness settings.
• Aspherical Glass Lens: Multi-coated with Burris's Hi-Lume coating to ensure a highly clear, distortion-free view across the 22 mm x 17 mm sight window.
• Built-In Rear Sight: Features a removable fixed rear sight post and a high-visibility white indexing stripe on the rear housing to accelerate initial dot acquisition.
• Battery Safety Compliance: Powered by a single CR2032 battery. In accordance with Australian safety guidelines, users should handle and store these lithium button batteries using child-resistant precautions.

Product Specifications

• Model/Part Number: BO300239 (also listed as 300239)
• Dimensions: 1.61 in (L) x 0.99 in (W) x 0.98 in (H) (approx. 41 mm x 25 mm x 25 mm)
• Sight Window Dimensions: 22 mm x 17 mm
• Weight: 0.44 oz (approx. 12.5 grams)
• Reticle: 6-MOA Red Dot
• Mounting Footprint: Shield RMSc
• Adjustment Range: 80 MOA total elevation; 80 MOA total windage
• Adjustment Click Value: 4 MOA
• Power Source: One CR2032 Lithium coin-cell battery
• Battery Life: Up to 25,000 hours on the medium brightness setting
• Operating Temperature Range: -4°F to +140°F (-20°C to +60°C)
• Storage Temperature Range: -22°F to +140°F (-30°C to +60°C)

Who is the Fastfire C 6 Moa Dot for?

• Everyday concealed carry practitioners — seeking an ultra-lightweight optic that adds virtually no bulk to a sub-compact slide, this micro red dot pistol sight weighs just 0.44 oz and mounts directly to the Shield RMSc footprint.
• Self-defense pistol shooters — requiring rapid, highly visible close-quarters target acquisition, this sight features a prominent 6 MOA dot and an "Always On" battery life of up to 25,000 hours to ensure constant readiness.

Less suitable for: precision shooting at distances exceeding 50 yards where the 6 MOA dot obscures smaller targets, operations in extreme climates outside the -4°F to +140°F range, or mounting directly to full-sized slide cuts without an adapter plate. For these scenarios, a reflex sight with a smaller 3 MOA reticle or a dedicated full-sized footprint interface is better suited.