KOFN Mounts by Bobro Engineering

Published on May 5, 2026
Duration: 13:28

This video reviews Bobro Engineering's KOFN (Keyed Optics Fascinating Network) system, a modular mounting solution. Instructor Ivan from Kit Badger highlights its versatility for attaching optics, flashlights, and other accessories to firearms via Picatinny or M-LOK interfaces. He emphasizes its value for users who need to frequently swap gear between different host platforms, particularly for night vision setups, and discusses its repeatability and durability compared to older QD mounts.

Quick Summary

The Bobro Engineering KOFN system is a modular mounting solution that uses a two-piece wedge interface for secure attachment of accessories like optics and flashlights to Picatinny or M-LOK rails. Its key advantage is the ease of swapping gear between firearms, offering repeatable mounting suitable for various applications, including night vision setups.

Chapters

  1. 00:08Introduction to Bobro Engineering KOFN System
  2. 00:25What is KOFN? Keyed Optics Fascinating Network
  3. 00:41History of Bobro Mounts
  4. 01:08The KOFN System Explained
  5. 01:15KOFN Picatinny Mount Example
  6. 01:22KOFN Top Ring Mount
  7. 01:33KOFN Interface Demonstration
  8. 01:54KOFN Mount Options Overview
  9. 02:01Optic Mounts (Acro Footprint)
  10. 02:04Bipod Mounts
  11. 02:09Flashlight Body Mount
  12. 02:15SureFire Threaded Head Compatibility
  13. 02:20Kiji Head Example
  14. 02:25M-LOK Flashlight Mount with Hinge
  15. 02:34Picatinny Flashlight Mount with Hinge
  16. 02:51Low-Profile M-LOK Mount
  17. 03:10Value Proposition: Versatility
  18. 03:21Optic Mount Height Considerations
  19. 03:40Capped Turret Advantage
  20. 04:02Exposed Turret Impact on Mount Height
  21. 04:30Where KOFN Shines: Modularity
  22. 04:42Bobro Mount Durability
  23. 04:54QD Mount Repeatability
  24. 05:20Optics in the Past: Expensive & Few
  25. 05:47Moving Optics Between Guns
  26. 06:19Optics Affordability Today
  27. 06:30Deploying Backup Irons
  28. 06:45KOFN System Practical Applications
  29. 06:55Night Vision Gear Application
  30. 07:06Swapping Gear Between Host Guns
  31. 07:17Zero Retention with KOFN
  32. 07:34Alternative Mounting Solutions
  33. 07:53Ease of Use vs. M-LOK
  34. 08:03Picatinny vs. M-LOK KOFN Mounts
  35. 08:13Adjustable Mount Positioning
  36. 08:29Mount Tightness and Grip Issues
  37. 08:43Low-Profile M-LOK Mount Example
  38. 08:54Accessing Light Switches
  39. 09:00Modular Mounting Benefits
  40. 09:10Repeatability Testing
  41. 09:33Zeroing and Accuracy Check
  42. 10:07Initial Zero Results
  43. 10:13Zero Consistency Discussion
  44. 10:32Is the KOFN Repeatable?
  45. 10:38Zero Shift Factors (Atmospherics)
  46. 11:08Will KOFN Mounts Shift Zero?
  47. 11:12Zero Shift Impact on Accuracy
  48. 11:38Personal Experience with Zero Shift
  49. 12:07Where KOFN Truly Shines
  50. 12:12Value Proposition: Swapping Gear
  51. 12:22Night Vision Gear Swapping
  52. 12:39Practicality of KOFN
  53. 12:43M-LOK vs. KOFN Ease of Use
  54. 12:51Swapping Between Host Guns
  55. 13:01Sharing Gear with Friends
  56. 13:06Experimenting with Different Setups
  57. 13:10Conclusion and Availability
  58. 13:17Outro from Kit Badger

Frequently Asked Questions

What is the Bobro Engineering KOFN system?

The Bobro Engineering KOFN system, which stands for Keyed Optics Fascinating Network, is a modular mounting solution designed for firearms. It uses a two-piece wedge interface to securely attach various accessories like optics, flashlights, and bipods to Picatinny or M-LOK rails.

What are the advantages of the Bobro KOFN system?

The primary advantage of the KOFN system is its modularity and ease of swapping accessories between different host firearms. It offers repeatable mounting and is particularly useful for users who need to frequently reconfigure their gear, especially for specialized applications like night vision.

Can the Bobro KOFN system maintain zero?

Yes, the KOFN system is designed for repeatable mounting and generally maintains zero well enough for practical use, even when moved between guns. While zero can shift with any optic mount due to atmospheric conditions, the shift with KOFN is typically minimal and not noticeable for standard engagements.

What types of accessories can be mounted with the KOFN system?

The KOFN system is versatile and can mount a range of accessories. This includes optic mounts (compatible with footprints like Acro), flashlight body mounts (often designed for SureFire threaded heads), and bipod mounts, offering flexibility for different firearm setups.

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