Mission First Tactical BUPSWR Flip Up Rear Sight AR-15 Black

The Mission First Tactical BUPSWR Flip Up Rear Sight delivers precision backup sighting for AR-platform rifles when primary optics fail. This low-profile folding sight locks securely in both deployed and stowed positions, maintaining zero through repeated use.

What Makes This Different

Unlike basic polymer sights, the BUPSWR features a robust steel construction with precision-machined apertures for consistent sight picture. The dual-aperture design provides both close-quarters and precision shooting options without tool adjustments. Spring-loaded detents ensure positive lock-up in both positions, eliminating sight wobble that compromises accuracy.

Key Features

• Dual aperture system with large (.070") and small (.040") peep holes
• Steel construction with matte black finish resists corrosion
• Spring-loaded detent system locks sight in up and down positions
• Low-profile design clears most optic mounts when folded
• Fits standard Picatinny/MIL-STD-1913 rails without modification
• Windage adjustable with standard AR-15 sight tool
• Same-plane height as standard A2 front sight posts

Field testing demonstrates the BUPSWR maintains zero through thousands of deployment cycles. The sight withstands recoil from standard 5.56/.223 loads and handles environmental extremes from desert heat to freezing conditions. Competition shooters appreciate the crisp sight picture, while tactical users rely on the instant deployment when transitioning from damaged optics.

Technical Specs

• Material: Steel with matte black finish
• Height: 1.5 inches deployed, 0.4 inches folded
• Weight: 1.2 ounces
• Aperture sizes: 0.070" large, 0.040" small
• Rail compatibility: Picatinny/MIL-STD-1913
• Adjustment: Windage only (elevation set by front sight)
• Made in USA

The BUPSWR represents proven backup sight technology at a competitive price point. Professional armorers stock this sight for departments requiring reliable iron sight backup systems.