BSA Prototype .45ACP Pistol

Published on March 4, 2015
Duration: 8:09

This guide details the unique features and disassembly considerations of the rare BSA Prototype .45ACP Pistol, as presented by Ian McCollum. It highlights the rotating barrel action, distinctive flat mainspring, and safety mechanisms, offering insights into post-WWI firearm development by Birmingham Small Arms.

Quick Summary

The BSA Prototype .45ACP pistol, presented by Ian McCollum, showcases a unique short-recoil, rotating barrel action and a distinctive rectangular flat mainspring for high tension. Developed by Birmingham Small Arms post-WWI, it also features a firing pin ejector and requires a two-handed magazine release, highlighting innovative engineering for its era.

Chapters

  1. 00:00Introduction to BSA Prototype .45ACP Pistol
  2. 00:43BSA Historical Context and Handgun Development
  3. 02:10Design Influences and Patent Adaptations
  4. 03:08Mechanical Features: Rotating Barrel and Safeties
  5. 04:00Magazine and Unique Mainspring Design
  6. 05:27Operational Details: Firing Pin Ejector
  7. 06:39Ergonomics and Conclusion

Frequently Asked Questions

What is unique about the BSA Prototype .45ACP pistol's action?

The BSA Prototype .45ACP pistol features a short-recoil, rotating barrel system, similar to Steyr-Hahn models, which is a distinctive mechanical design for its time and caliber.

What historical context surrounds the BSA Prototype .45ACP pistol?

Developed by Birmingham Small Arms (BSA) post-WWI, this prototype was part of their effort to explore new markets, including handguns in various calibers like .45 ACP, .32 ACP, and an experimental .34 caliber.

What are the key internal features of the BSA Prototype .45ACP pistol?

Internally, the pistol is notable for its rectangular flat mainspring, designed for high tension in a compact space, and its firing pin also serves as an ejector, which is uncommon for a .45 ACP locked-breech firearm.

How does the BSA Prototype .45ACP pistol handle magazine changes?

The 8-round magazine for the BSA Prototype .45ACP pistol has a unique catch mechanism that requires two hands to operate for removal, adding a specific operational step.

More Gunsmithing & DIY Videos You Might Like

More from Forgotten Weapons

View all →