Steyr StG 77, aka the AUG

Published on September 7, 2025
Duration: 1:10

The Steyr AUG (StG 77) is a revolutionary bullpup rifle featuring an integrated 1.5x optic and extensive polymer construction. Its progressive trigger allows for both semi-automatic and full-automatic fire with a single trigger pull. The rifle also boasts a quick-change barrel system and a fully polymer fire control group.

Quick Summary

The Steyr AUG (StG 77) is a revolutionary bullpup rifle known for its extensive polymer construction and integrated 1.5x optic. Its unique progressive trigger allows for both semi-automatic and full-automatic fire based on pull length.

Chapters

  1. 00:00Introduction and Design
  2. 00:12Controls and Trigger System
  3. 00:27Charging Handle and Barrel Removal
  4. 00:40Internal Fire Control Group

Frequently Asked Questions

What makes the Steyr AUG's trigger system unique?

The Steyr AUG features a progressive trigger. A short pull allows for semi-automatic fire, while pulling the trigger further engages the auto sear, enabling full-automatic fire. This dual-functionality is a key characteristic of the rifle's design.

What were the key innovations of the Steyr AUG (StG 77)?

The Steyr AUG was revolutionary for its time due to its extensive use of polymer in construction and its integrated 1.5x optic. It also pioneered the bullpup design with advanced features like a quick-change barrel and a progressive trigger.

How is the barrel removed from the Steyr AUG?

The Steyr AUG has a quick-change barrel system. Barrel removal is facilitated by pushing a release button and then rotating the barrel assembly off the receiver, allowing for rapid field maintenance or caliber changes.

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