Quote:
The hammer gun was not a design failure...it's stood the test of time


The gun in question apparently still opens and closes and shoots - that would indicate it has stood the test of time too.

Dig's website has a gallery of actions, many of which are "design failures" by Brit makers who preferred to use their own design than pay royalties on others patents. Actions Gallery

Now Lang's Vena Contracta - that could be labeled a "design failure."

Such a long, long time to be gone, and a short time to be there.