Ultradyne C4 Dynamount Sights

Published on September 16, 2019
Duration: 18:04

This video reviews the Ultradyne C4 Dynamount sights paired with their Apollo S compensator on an 18-inch AR-15. The sights offer a unique Dyna mount system that keys with the muzzle device, extending the sight radius. Key features include tool-less front sight adjustment, adjustable windage and elevation, interchangeable rear sight diopters, and a globe-style front sight post with quadrants for consistent sight pictures. The Apollo S compensator is a highly effective five-chamber brake. The review demonstrates their use from 200 to 600 yards with 55-grain ammunition, highlighting their precision as backup sights.

Quick Summary

The Ultradyne C4 Dynamount sights, paired with the Apollo S compensator, offer an extended sight radius on AR-15 platforms. Key features include tool-less front sight adjustment, interchangeable rear diopters, and a globe-style front sight for consistent aiming. The Apollo S compensator is highly effective at recoil reduction but is notably loud. These sights are designed as precision backup sights, intended to be zeroed at 200 yards with 55-grain ammunition.

Chapters

  1. 00:00Introduction to Ultradyne C4 Dynamount Sights
  2. 00:09Ultradyne C4 Sights and Dyna Mount
  3. 00:21Apollo S Compensator Features
  4. 00:31Front Sight Keying with Muzzle Device
  5. 00:40Rifle Build: 18-inch PSA Upper
  6. 00:48Ammunition: Norma TAC 55 Grain
  7. 01:01Unique Sight Features
  8. 01:07Tool-less Front Sight Adjustment
  9. 01:23Rear Sight Adjustments
  10. 01:30Intended Zeroing Distance
  11. 01:47Shooting at Various Distances
  12. 01:50Rear Sight Diopter Options
  13. 02:00Front Sight Post Flexibility
  14. 02:29Globe Front Sight Post Design
  15. 02:53Precision Backup Sight Application
  16. 03:01Compensator Effectiveness and Loudness
  17. 03:13First Shots at 200 Yards
  18. 04:08Rifle Build Details
  19. 04:31Dialing Up to 250 Yards
  20. 05:20Initial Impressions of the Sights
  21. 05:48Compensator Recoil Reduction
  22. 06:04Target Obscuration at Long Range
  23. 06:17Installation Details: Timing Washer
  24. 06:31Compensator Pin Engagement
  25. 06:51Ease of Installation
  26. 07:02Shooting at 300 Yards
  27. 07:10Targeting at 300 Yards
  28. 08:05Windage Check at 300 Yards
  29. 08:08Engaging 8-inch Popper at 300 Yards
  30. 09:00Impacts on 8-inch Target
  31. 09:30Wind Adjustments at 300 Yards
  32. 10:10Previous Testing with Gopher Target
  33. 10:18Moving to 600 Yards
  34. 10:36Shooting at 600 Yards
  35. 10:50Dialed Up to 600 Yards
  36. 11:02Crosswind Considerations
  37. 11:15Initial Holdover Guess
  38. 11:26Elevation Tracking at 600 Yards
  39. 11:53Adjusting for Underpowered Ammo
  40. 12:19Impacts at 600 Yards with Wind
  41. 13:08Wind Calling Method
  42. 13:38Varying Wind Conditions
  43. 14:00Elevation Perfect, Left of Plate
  44. 14:08Adjusting Sights for Wind
  45. 14:32Final Shots at 600 Yards
  46. 15:20Observations on Globe Sight Performance
  47. 15:33Wind Effects on 55 Grain at 600 Yards
  48. 15:43Engaging Targets at 600 Yards with Backup Sights
  49. 15:57Target Size Comparison (3 MOA)
  50. 16:15Using Globe Sight for Wind Holds
  51. 17:08Conclusion and Thanks
  52. 17:34Encouragement to Shoot Irons
  53. 17:42Optic Compatibility

Frequently Asked Questions

What are the key features of the Ultradyne C4 Dynamount sights?

The Ultradyne C4 Dynamount sights feature a unique Dyna mount that keys with the muzzle device for an extended sight radius. They offer tool-less, spring-loaded front sight adjustment for windage and elevation, interchangeable rear sight diopters, and a globe-style front sight post with quadrants for a consistent sight picture.

How does the Ultradyne Apollo S compensator work with the C4 Dynamount sights?

The Apollo S compensator is a five-chamber brake that the Dyna mount's front sight keys into. This system requires proper timing of the compensator during installation, ensuring it pins into the Dyna mount base for a stable and extended sight radius.

What is the intended zeroing distance for the Ultradyne C4 sights?

The Ultradyne C4 sights are intended to be zeroed at 200 yards using 55-grain ammunition. While they can be used at longer distances, adjustments may be needed if the ammunition's velocity differs significantly from the recommended specifications.

How effective is the Ultradyne Apollo S compensator?

The Apollo S compensator is described as extremely effective, significantly reducing recoil and muzzle rise. However, it is also noted to be very loud due to its design as a muzzle brake.

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