as i answered on FB...as milled parts ran thin, stamped parts were indeed used, to a point.. mostly trigger guards, and upper bands. bayonet lugs, followers, and buttplates would be milled all the way through production.
use stamped trigger guards and bands was more to do the quality and fitment, the band broke very easy, as well as the trigger guards, the band springs would be milled type through 1903 production,
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