The Ultradyne C4 Flip-Up Rear Sight utilizes Ultradyne's exclusive dynalign sight picture technology for accurate and immediate acquisition. Most BUIS systems utilize a sight picture that is non-intuitive. In such systems, the brain's visual systems are asked to align a circular rear aperture with a rectangular front post shape while simultaneously ignoring the 'ears' that protect the front sight post. Dynalign's circle-within-circle sight picture allows for faster sight picture acquisition. Additionally, the use of a front aperture further reduces parallax effect which makes accuracy less depend on precise sight alignment. Dynalign is a faster and more accurate sight picture than can improve shooting performance.

Features:

- Purely Concentric Sight Picture
- Maximum Flexibility
- Superior Side-Adjust Ergonomics
- One-Handed Deployment and Stowage
- Interchangeable Aperture
- MIL-STD-1913 Picatinny Rail
- CNC Machined

Includes:

- .070" Aperture

Specifications:

- Color: UD Black
- Finish: Salt Bath Nitride
- Material: 4140 Chrome Moly Steel
- Weight: 2.5 oz.
- Adjustment Click Value: 1/2 MOA
- Maximum Windage Adjustment: 40 MOA
- Maximum Elevation Adjustment: 18 MOA
- Offset: Yes
- Fixed or Folding: Fixed