Kriss USA DARSBL00 Defiance AR-15 Rear Flip-Up Sight - Low Profile

The Kriss USA DARSBL00 Defiance rear flip-up sight delivers precision aiming capability for AR-15 platforms with its robust steel construction and low-profile design. This backup iron sight system provides reliable target acquisition when primary optics fail or when lightweight configurations demand streamlined accessories.

What Makes This Different

The Defiance series incorporates a spring-loaded flip mechanism that deploys instantly under pressure while maintaining a compact folded profile. Unlike polymer alternatives, the all-steel construction withstands repeated impacts and temperature extremes without warping or cracking. The sight aperture features dual settings for close and extended range engagements, eliminating the need for manual adjustments during transitions.

Key Features

• All-steel construction for maximum durability and impact resistance
• Low-profile design measures under 0.4 inches when folded
• Spring-loaded deployment mechanism activates with thumb pressure
• Dual-aperture rear sight for close and precision shooting
• Mounts to standard Picatinny rail systems without modification
• Matte black finish resists corrosion and reduces glare
• Compatible with all AR-15 and AR-10 upper receivers

Field performance remains consistent across temperature ranges from -40°F to 140°F, making this sight suitable for duty use, competition shooting, and hunting applications. The positive detent system locks the sight in both deployed and folded positions, preventing accidental movement during transport or storage. Windage adjustments provide precise zero maintenance without tools, while the hardened steel construction maintains zero retention through thousands of rounds.

Technical Specs

• Material: Heat-treated steel construction
• Finish: Matte black oxide coating
• Folded Height: 0.39 inches
• Deployed Height: 1.4 inches
• Weight: 1.2 ounces
• Rail Compatibility: Standard Picatinny/MIL-STD-1913
• Sight Radius: Co-witnesses with A2 front sight post
• Country of Origin: United States

The DARSBL00 represents proven backup sight technology for shooters who prioritize reliability over convenience features. Professional users and serious enthusiasts recognize the value of steel construction when failure means mission compromise.