The King of Budget Roller Delayed PCCs? The Springfield Kuna

Published on February 21, 2026
Duration: 22:41

This video reviews the Springfield Kuna pistol caliber carbine, focusing on its performance with an FRT trigger and comparing it to an MP5. The presenter, Micah Mayfield, details modifications, maintenance procedures, and discusses the pros and cons of the Kuna receiver versus the Nexus Evo upgrade. He highlights the importance of proper lubrication for FRT systems and offers insights into the firearm's recoil impulse and rate of fire.

Quick Summary

The Springfield Kuna is a roller-delayed blowback PCC that offers good value, especially with upgrades like the Nexus Evo receiver. It allows for FRT triggers, has a unique recoil impulse, and requires proper lubrication for optimal performance, particularly when suppressed.

Chapters

  1. 00:00Introduction & Initial Impressions
  2. 01:31Springfield Collaboration & Kuna Ownership
  3. 02:14Range Time with the Springfield Kuna
  4. 02:27PCCs: Useless or Not?
  5. 03:059mm PCCs for Serious Use
  6. 03:38Sponsors: OpticsPlanet, Custom Nightvision, HSL Ammo
  7. 04:34FRTs and Submachine Gun Status
  8. 05:09Demonstrating Submachine Gun Status
  9. 05:33AS Design Lower Receiver & FRT
  10. 06:08Comparing Rate of Fire: MP5 vs. Kuna
  11. 06:44Kuna FRT vs. MP5 FRT Comparison
  12. 07:12Nexus Receiver with FRT
  13. 07:34SilencerCo Omega 9K Suppressor
  14. 07:56Kuna Maintenance: Cleaning and Lube
  15. 09:23Kuna vs. MP5: Rate of Fire Preference
  16. 10:00MP5 with Suppressor Comparison
  17. 10:43Side-by-Side Comparison Shooting
  18. 11:08Kuna Recoil Impulse vs. MP5
  19. 11:35Observing Vertical Recoil
  20. 12:04Viewer Preference Poll
  21. 12:20MP5's Lack of Recoil
  22. 12:41HK Phase & Product Obsession
  23. 12:56Back to the Springfield Kuna: Bench Review
  24. 13:15Studio Comparison: Nexus vs. Original Kuna Receiver
  25. 13:32Trigger Capability: Nexus vs. Kuna
  26. 13:45Kuna Lower Proprietary Trigger
  27. 14:10Trigger Underwhelming: Heavy, Long, Gritty
  28. 14:31Kuna Trigger Reliability & Bolt Release
  29. 14:44Nexus Receiver Ambi Mag Release
  30. 15:01Biggest Downside: Nexus Magazine Angle
  31. 15:37Scorpion Magazine Drop Issues
  32. 15:52Aesthetics: Kuna vs. Nexus Receiver
  33. 16:16Pros of Nexus Receiver
  34. 16:31Kuna Receiver Weight vs. Nexus
  35. 16:42Overall Recommendation: Nexus Receiver
  36. 17:00Scorpion Mags vs. Kuna Mags
  37. 17:17Kuna Magazine Issues at Launch
  38. 17:50Kuna Aesthetics with Default Lower
  39. 18:04Kuna Roller Delay System
  40. 18:12Kuna Muzzle Device & Tri-Lug
  41. 18:42Affordability of Roller Delayed PCC
  42. 19:36Nexus Trip Bar Requirement
  43. 19:55Metal Trip Bar & Rate of Fire
  44. 20:01Bolt Weight and Recoil Impulse
  45. 20:13Roller Mechanism Explained
  46. 20:28Bolt Weight Contribution
  47. 20:43Springfield Kuna Final Thoughts
  48. 20:50Kuna with Nexus Receiver
  49. 21:08Compelling PCC & Value Proposition
  50. 21:21Springfield Kuna Buy Rating
  51. 21:36Price Comparison: Kuna vs. SP5
  52. 21:50Kuna with Nexus Upgrade Value
  53. 22:07Crappy Muzzle Device Replacement
  54. 22:14SilencerCo Shout Out & Carbon Lock
  55. 22:35Cleaning the Tri-Lug

Frequently Asked Questions

What is the main advantage of the Nexus Evo receiver upgrade for the Springfield Kuna?

The Nexus Evo receiver upgrade significantly enhances the Springfield Kuna by allowing the use of standard AR-15 triggers, including FRTs, and improves magazine handling with Scorpion magazines, offering a more versatile and user-friendly experience.

How does the Springfield Kuna's roller-delayed blowback system compare to direct blowback PCCs?

The Kuna's roller-delayed blowback system is more sophisticated than direct blowback PCCs, offering a smoother operation and a unique, generally lighter recoil impulse, distinguishing it from cheaper, simpler designs.

What maintenance is crucial for the Springfield Kuna when using an FRT trigger?

Proper lubrication is essential for the FRT system on the Kuna. The trip bar and bolt carrier group can accumulate fouling, especially when suppressed, so regular cleaning and generous application of lubricant are necessary to prevent drag and ensure reliability.

Is the Springfield Kuna a good value for its price?

Yes, the Springfield Kuna is considered a compelling PCC and a good value, especially for a roller-delayed system. Its affordability, combined with the potential for upgrades like the Nexus Evo receiver, makes it a strong contender in the market.

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