W+F Bern P47 Experimental Gas-Delay Pistol

Published on July 29, 2017
Duration: 8:29

This guide details the field stripping and mechanical overview of the rare W+F Bern P47 Experimental Pistol, as presented by Ian McCollum on Forgotten Weapons. It covers accessing the unique internal trigger mechanism and understanding the gas-delay blowback system, highlighting its historical context as a Swiss prototype. The process emphasizes careful observation of the complex internal components and the innovative gas operation.

Quick Summary

The W+F Bern P47 is a rare Swiss prototype military pistol from 1947, featuring a unique gas-delay blowback system inspired by Ole Krag's 1910 patent. Developed by the Bern factory as a potential Luger replacement, only ten units were produced. It lost the Swiss military contract to the SIG P210, making it a historical curiosity.

Chapters

  1. 00:00Introduction to Bern P47
  2. 01:52Field Stripping and Internal Mechanics
  3. 04:06Gas-Delay Blowback System Explained
  4. 06:59Military Trials and Legacy

Frequently Asked Questions

What is the W+F Bern P47 Experimental Pistol?

The W+F Bern P47 is a rare Swiss prototype military pistol from 1947, developed by the Bern factory. It was designed as a potential replacement for the Luger and features a unique gas-delay blowback operating system, with only ten units ever produced.

How does the gas-delay blowback system of the Bern P47 work?

The P47's gas-delay system uses gas ports in the barrel to bleed pressure into a cylinder. This pressure pushes a piston forward, which delays the opening of the slide until the bullet has exited the barrel, ensuring safe operation.

Why was the Bern P47 not adopted by the Swiss military?

Despite its innovative design and good performance, the Bern P47 lost the Swiss military contract to the SIG P210 (P49), designed by Charles Petter. The SIG's design was ultimately deemed superior by the military evaluators.

What makes the Bern P47 historically significant?

The Bern P47 is significant as a rare example of experimental Swiss firearms engineering from the post-WWII era. Its unique gas-delay system and limited production make it a highly sought-after piece for collectors and historians.

More Gunsmithing & DIY Videos You Might Like

More from Forgotten Weapons

View all →