The Springfield Kuna is now Super Safe And takes Evo mags

Published on December 23, 2025
Duration: 10:04

This guide details the modification of a Springfield Kuna with a Nexus Firearms milled aluminum lower receiver, enabling compatibility with CZ Scorpion Evo magazines and AR-15 fire control groups. It includes steps for installation, verification, and live fire testing of performance and reliability, drawing on insights from an expert instructor.

Quick Summary

The Springfield Kuna, modified with a Nexus Firearms milled aluminum lower receiver, now accepts CZ Scorpion Evo magazines and AR-15 fire control groups. Tested for reliability over 3,000 rounds, this upgrade enhances durability and offers improved ergonomics with a flared magwell, despite losing the factory left-hand magazine release.

Chapters

  1. 00:00Introduction to Springfield Kuna Mod
  2. 01:38Nexus Lower Features & Benefits
  3. 03:26Live Fire Drills & Performance
  4. 08:04Reliability Report

Frequently Asked Questions

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

The Nexus Firearms lower receiver allows the Springfield Kuna to accept widely available CZ Scorpion Evo magazines, features a paddle magazine release, and upgrades the construction from polymer to a more durable milled aluminum.

How reliable is the modified Springfield Kuna after the Nexus lower receiver upgrade?

Extensive testing showed the modified Springfield Kuna to be highly reliable, successfully firing over 3,000 rounds even when the firearm was in a dirty condition.

What types of fire control groups are compatible with the Nexus modified Springfield Kuna?

The Nexus Firearms lower receiver modification enables compatibility with standard AR-15 fire control groups, including options like Forced Reset Triggers (FRT) and Super Safety systems.

Are there any drawbacks to the Nexus lower receiver modification for the Springfield Kuna?

A notable trade-off is the loss of the factory's left-hand magazine release. However, the benefits of magazine compatibility and improved ergonomics often outweigh this for many users.

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