The Springfield Kuna is now Super Safe And takes Evo mags

Published on December 23, 2025
Duration: 10:04

This video details a significant modification to the Springfield Kuna, replacing the factory lower with a Nexus Firearms aluminum receiver. This upgrade enables the use of widely available CZ Scorpion Evo magazines and AR-15 compatible fire control groups, including advanced triggers like the FRT. The host, demonstrating high expertise, conducts live-fire drills and provides a reliability report after over 3,000 rounds, highlighting increased durability and improved reload speed.

Quick Summary

The Nexus Firearms lower receiver significantly upgrades the Springfield Kuna by enabling the use of CZ Scorpion Evo magazines and AR-15 fire control groups, including advanced triggers. Tested over 3,000 rounds, this milled aluminum upgrade enhances durability and reload speed, though it sacrifices the factory left-hand magazine release.

Chapters

  1. 00:00Intro: Springfield Kuna Nexus Mod
  2. 01:38Nexus Lower Features & Benefits
  3. 03:26Live Fire Drills & Performance
  4. 06:43Trade-offs & Compatibility
  5. 08:04Long-term Reliability Report

Frequently Asked Questions

What are the main benefits of the Nexus Firearms lower receiver for the Springfield Kuna?

The Nexus lower allows the Springfield Kuna to use widely available CZ Scorpion Evo magazines, features a durable milled aluminum construction, and enables compatibility with AR-15 fire control groups, including advanced triggers like Forced Reset Triggers (FRT) and Super Safety systems.

How does the Nexus lower affect magazine compatibility on the Springfield Kuna?

The Nexus Firearms lower receiver converts the Springfield Kuna to accept CZ Scorpion Evo magazines and compatible variants like Magpul Evo magazines. This offers a broader selection and potentially lower cost compared to proprietary magazines.

What is the reliability of the Springfield Kuna with the Nexus lower receiver modification?

The modification has been tested reliably over 3,000 rounds. The aluminum lower upgrade proved durable and maintained performance even when the firearm was dirty, indicating good long-term reliability.

Are there any downsides to installing the Nexus Firearms lower receiver on a Springfield Kuna?

A notable trade-off is the loss of the factory ambidextrous (left-hand) magazine release. Users accustomed to this feature may need to adapt to the Nexus lower's paddle release.

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