The Walther origin explains a lot.

by Paul , Monday, July 01, 2024, 08:54 (143 days ago) @ Otony

I dearly wanted to see it out of its stock to get an idea of how they grafted a competition trigger onto a sporter receiver. Well, starting out with a competition receiver greatly simplifies that issue! There's a lot of ???, but it's really none of my business, just a big curiosity about all things BANGSTICK that torments me. I remember digging through the junk pile at my gunsmith's place way out in the sertão and wondering about the history of some of the relics quietly rusting into oblivion. There was everything from old muzzle loaders to some fine european shotgun and other sporting type stuff, as well as one Mauser bolt action that was from an era of greater political unrest.

Anyway, his was the only "custom" rifle on the line. Everyone else was shooting pretty much stock factory offerings, hence my fascination with it.