A printable protection object for the Anschütz 1907/1903 bolt carrier.
Number added for easy identification.
Replica of this:
https://shop.ahg-anschuetz.de/en/cleaning-books-amo/measuring-and-test-instruments/208/ahg-bolt-protector
TinkerCad design here: https://www.tinkercad.com/things/6HNdMIbqYXT