Xausa, I agree again. As the rifle lacks a conventional German type open rear sight,but was fitted with a Lyman 48 rear sight, this also points to a "special order" by an American. In Germany even now, but more so in 1945, receiver peep sights were and are between unknown and unpopular. Germans never used such peep sights on hunting rifles, preferring scopes instead since before WW1. As Lyman 48 sights were popular with American hunters then, I think the rifle was ordered without a "conventional" rear sight with the intention to mount the Lyman 48, which perhaps was installed on the finished and delivered rifle by an US military armorer.
