French Trials FN CAL: Adding Rifle Grenade Capability

Published on September 10, 2025
Duration: 8:08

This guide details the process of adding rifle grenade capability to the FN CAL, as demonstrated by Ian McCollum. It covers the attachment of a folding grenade sight, adjustment of the barrel stop for range control, and the use of an experimental 25-round magazine. The FN CAL was evaluated by the French Army in the 1970s for its potential grenade launching capabilities.

Quick Summary

The FN CAL rifle was evaluated in 1970s French trials for its rifle grenade capability, featuring a folding STRIM sight and adjustable barrel stop. It also had a four-position selector and an experimental 25-round magazine, but was ultimately unsuccessful in trials against the FAMAS.

Chapters

  1. 00:00Introduction and Historical Context
  2. 01:25FN CAL Features and Modifications
  3. 02:51Evolution of Grenade Launching Systems
  4. 06:13Experimental 25-Round Magazine
  5. 06:53Trial Outcome and Legacy

Frequently Asked Questions

What was the purpose of the FN CAL rifle in the French trials?

The FN CAL was evaluated by the French Army in the 1970s as a potential alternative to their standard service rifle, specifically assessing its suitability for grenade launching capabilities alongside other foreign designs like the M16 and HK33.

How was rifle grenade capability added to the FN CAL?

Rifle grenade capability was added to the FN CAL through modifications including a folding STRIM grenade sight with range markings and an adjustable barrel stop for precise range control, similar to systems later used on other French rifles.

What were the key features of the FN CAL tested in French trials?

The FN CAL tested featured a four-position selector (Safe, Semi, 3-round burst, Full Auto) and was modified to accept rifle grenades. An experimental 25-round magazine was also observed during these trials.

Why was the FN CAL ultimately unsuccessful in the French trials?

Despite its features, the FN CAL was unsuccessful in the French trials. While the HK33 performed well, it was politically unviable. The French ultimately adopted the FAMAS, replacing the FN CAL and later the FNC.

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