Ultradyne C4 Sight System Combo Dynamount Flip-Up Front Rear Athena Linear Compensator AR-15 1/2"-

Ultradyne C4 Sight System Combo Dynamount Flip-Up Front Sight Flip-Up Rear Sight, Athena Linear Compensator, AR-15 1/2"-28, Black

The Ultradyne C4 Sight System Combo includes the Dynamount Flip-Up Front Sight, Flip-Up Rear Sight and Athena Linear Compensator. 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.



The C4 Ultradyne Flip-Up Front Sight features a purely concentric sight picture with windage and tool-less elevation adjustability. Designed for maximum flexibility, the Dynamount Front Sight is barrel mounted which greatly reduces sight movement compared to free-float handguard mounting. The Flip-Up Front Sight is also indexable to 45 Degrees for offset use, making it an absolute must have feature for competition shooters engaged in 3-Gun shooting.



The Athena Linear Compensator is optimized to reduce muzzle rise with gas being vented at an angle and then forward. This sends a lower percent of sound back towards to shooter. By pairing the Athena with the Dynamount Flip-Up Front Sight, users will benefit from the elimination of sight deflection associated with handguard mounting.



Features C4 Dynamount Flip-Up Front Sight :

- Purely Concentric Sight Picture

- Maximum Flexibility

- Windage-Adjustable for Zeroing

- Indexable to 45 Degrees for Offset Use

- CNC Machined Aluminum



Includes :

- 10 MOA Dynalign Aperture

- Front Post



Features C4 Flip-Up Rear Sight :

- 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



Features Athena Linear Compensator :

- Shrouded Timing Nut Mounting

- 416 Stainless Steel

- Ultra-Rugged Nitride Finish



Specifications C4 Dynamount Flip-Up Front Sight :

- Finish: Matte

- Material: CNC Machine Aluminum

- Height: 0.369"

- Width: 1.21"

- Weight 2.2 oz.

- Adjustable Click Value: 1.25 MOA

- Maximum Windage Adjustment: 40 MOA

- Maximum Elevation Adjustment: 28 MOA



Specifications C4 Flip-Up Rear Sight :

- Finish: Salt Bath Nitride

- Material: 4140 Chrome Moly Steel

- Height: 0.369"

- Length: 1.38"

- Weight: 2.5 oz.

- Adjustable Click Value: 1/2 MOA

- Maximum Windage Adjustment: 40 MOA

- Maximum Elevation Adjustment:

Enter your ZIP code for an exact shipping cost on this item. Hazardous-materials fees, where they apply, are included in the total shown.

Read our full shipping policy

Firearms must ship to a licensed dealer (FFL), who completes the transfer and the required background check when you collect the item.

How FFL transfers work · Terms of sale · Product and legal restrictions