The ugliest rifle you didn't know you would love - Stgw.57 / PE57

Published on November 15, 2020
Duration: 39:33

The Stgw.57/PE57 is a robust Swiss military rifle featuring a unique roller-delayed blowback system and exceptional engineering. Its design incorporates a highly complex sighting system, an integrated bipod for multi-role capability, and a special grenade launching trigger. The rifle's chamber design includes a ring to mitigate bolt bounce, and it ejects spent casings head/base first to protect adjacent soldiers.

Quick Summary

The Stgw.57 / PE57 is a Swiss military rifle featuring a roller-delayed blowback system and a unique head/base-first casing ejection to protect nearby soldiers. It's designed for multi-role capability, including infantry, LMG, and DMR roles, with an integrated bipod and a special grenade launching trigger.

Chapters

  1. 00:00Introduction: Swiss K31 Predecessor
  2. 03:06Stgw.57 / PE57 Overview
  3. 03:43Roller-Delayed Blowback System
  4. 06:23Magazines and Export Variants
  5. 07:53Unique Ejection Pattern Explained
  6. 10:32Intricate Swiss Sighting System
  7. 14:52Bipod and Multi-Role Design
  8. 16:18Grenade Launching Features
  9. 20:55DMR Role and Scope Mounting
  10. 22:54Chamber Engineering & Bolt Bounce
  11. 29:11Field Stripping and Internals

Frequently Asked Questions

What makes the Stgw.57 / PE57's operating system unique?

The Stgw.57 / PE57 uses a roller-delayed blowback system, similar to the German G3 and Spanish CETME, but with specific Swiss engineering refinements. This system allows for reliable operation with powerful cartridges.

How does the Stgw.57 / PE57 handle spent casings?

Uniquely, the Stgw.57 / PE57 ejects spent casings head/base first, rather than neck first. This design choice was implemented to protect neighboring soldiers from ejected brass during sustained fire.

What are the multi-role capabilities of the Stgw.57 / PE57?

The Stgw.57 / PE57 was designed to serve as an infantry rifle, a light machine gun, and a designated marksman rifle. Its integrated bipod can be repositioned for different roles.

Does the Stgw.57 / PE57 have special features for grenade launching?

Yes, the rifle includes a dedicated grenade launching trigger, which is a fold-down lever. This prevents finger injury from heavy recoil when launching rifle grenades.

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