Many of the parts do fit in the original modells, like BD38/MP38 and BD42G/FG42G . I have sendt lots of parts to guys with originals that missed parts, and most parts fitted perfectly, . I sell BD parts not WW2 parts, only a few original parts. All new parts are marked BD 38,44,42 , not MP38,44, 42. magazines works perfect in originals, I have delivered magazines for FG42, MP44, MP38 and MP35 s. Sorry for my bad writing, English is not my main language.