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Questions & Answers
Is the Ultradyne C4 Flip up site compatable with the DRD Tactical CDR-15? The handguard slips over the barrel after attaching the barrel. Expert Answer

The Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight is compatible with any rifle/pistol that has any Ultradyne muzzle device.

by Ethan, Gear Expert, May 11, 2022
Does anyone notice the fact that in the second video there’s clearly some offal editing done to make it look like he hit the target? Manufacturer Answer

Please reach out to Optics Planet for more information.

by Ultradyne USA, Manufacturer, October 20, 2025
Customer Reviews
Helpful Positive Review
I've never used a more intuitive, accurate iron sight, but, although the sight will mount directly to most threaded AR15 caliber barrels, you will need to purchase a brake/compensator, muzzle break, or flash-hider from Ultradyne in that caliber to mo...
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2/2 found this helpful
Helpful Negative Review
Sloppiest Sight Ever? by Garand One, June 25, 2022
I can't recommend the Ultradyne C4 front sight in either the Dynamount (barrel mount) configuration or the C4 Picatinny mount version of this sight. Don't believe the marketing hype behind this sight. This is possibly the sloppiest front sight on t...
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6/10 found this helpful
Most Recent Reviews
C4 Flip-up Dynamount by Tony, Verified Owner, December 19, 2023
I've been using the Ultradyne C4 sights for a number of years on several AR's and can't say how much I like them. I have made them a standard for all my AR's. The front peep aperture makes sighting a breeze even with my nearly 60 year old eyes. I pre...
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Most Recent Reviews
C4 Flip-Up .223/5.56 Dynamount Front Sight by Cosh, Verified Owner, November 5, 2023
These sights are awesome for carbines or rifles with a short handgauard that would give you a very short front/rear sight setup if mounted on the end of a short rail. Easy to install but you have to purchase a Ultradyne muzzle devise for the Dynamou...
Read More...
Read All 4 Reviews

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Color:
Black
Additional Features:
12 MOA
Sight Position:
Front
Gun Model:
AR-15
Gun Make:
AR Platform
Front Sight Color:
Black
Rear Sight Color:
Front Sight Only
Front Post Shape:
Aperture
Included Accessories:
12 MOA Dynalign, Front Post
Illumination Color:
None

Code: 3HE-IRN-C4DF223-UD10520

MPN: UD10520

UPC: 851019008125

List: $169.00Save $9.01
$159.99

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Product Info for Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight

The Ultradyne C4 DYNAMOUNT FRONT SIGHT is the ultimate BUIS. It starts with a the superior always centered aperture that mounts to the barrel to ensure accuracy. Windage and elevation adjustments are also available along with the ability to set at 90 or 45 degrees. Using the C4 Dynamount Front Sight in conjunction with the C4 Rear Sight creates a perfectly concentric sight picture that allows the shooter to see the target, enables faster sight acquisition, reduces the effect of parallax and gives the ability to consistently shoot accurately out to 600 yards and beyond. If you want the ultimate front sight, this is the one for you!image

Specifications for Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight:

Manufacturer: Ultradyne
Color: Black
Additional Features: 12 MOA
Sight Mounting Orientation: Top Mounted
Sight Position: Front
Gun Model: AR-15
Gun Make: AR Platform
Front Sight Color: Black
Rear Sight Color: Front Sight Only
Front Post Shape: Aperture
Deployable: Yes
Fabric/Material: 7075 Aluminum, 4140 CrMo Steel
Blade Height: 1.21 in
Included Accessories: 12 MOA Dynalign, Front Post
Illumination Color: None
Hand: Ambidextrous
Country of Origin: USA

Features of Ultradyne C4 DYNAMOUNT FRONT SIGHT:

  • Rock Solid Barrel Mount
  • Purely concentric sight picture with an always centered inner aperture and outer circle for easy alignment
  • Apertue sights gives a shooter the ABILITY to focus 100% on the target and uses the brains natural inclination to center the target, which is done effortlessly
  • Windage-Adjustable for zeroing (1/2 MOA/Click), which guarantees that the rear sight windage is perfectly centered when at zero for maximum in windage adjustment in either direction along with easy return to zero
  • Tool-less elevation adjustment that is always perfectly concentric with the outer circle
  • Indexable to 45 Degrees for Offset Use
  • Includes 12 MOA Dynalign Aperture Front Post
  • Strategic use of materials to maximize stregnth and minimize weight
  • 4140CrMo with Nitride Finish / CNC Machined 7075 Aluminum

Package Contents:

  • Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight

Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight Orderable Models

List of Orderable Models

  • Ultradyne C4 Dynamount Flip-Up Front Sight, 223/5.56, Black, UD10520 , MPN: UD10520 , UPC: 851019008125 , Code: 3HE-IRN-C4DF223-UD10520

Ultradyne C4 Flip-Up .223/5.56 Dynamount Front Sight Unavailable & Discontinued Models

List of Unorderable Models

  • Ultradyne C4 Flip-Up Front Sight, .223/5.56 Dynamount, Brown, UD10540 , MPN: UD10540 , UPC: 851019008149 , Code: 3HE-IRN-C4DF223-UD10540
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