Manufrance was a different deal than the smaller builders, and, the cottage industry that helped to support the small builders. For a time, Manu could and did proof their own guns. If you needed, say, a coffee grinder, a bicycle, a motorcycle, silverware, luggage, or any of a thousand or more other household items, they had you covered.
Many of the cottage industry folks were going home, and breaking the law by working part time doing engraving, fitting, stock work or anything else that went into the production of a consumer gun. They didn’t produce anything with an idea that it would be history, but, more with the idea that it helped pay the bills. The socialists in charge didn’t want them working part time, thus, the less said was better.

Best,
Ted