The Castle's FN-built Israeli Mauser in 7.62 x 51. With some of her fiddly-bits. The pic embiggens. Here she is wearing her grenade launcher . And here are close-ups of her breech markings , bayonet , and hefty grenade launcher . The Israelis procured a lot of Mauser rifles during the post-war period prior to the formal establishment of the nation of Israel. They got them from a lot of sources, from ex-Nazi German to Mexican weapons, as many nations were upgrading their arsenals to semi-autos...