This is the Anschutz 10 round .22LR magazine for the Anschutz 525 semi-auto (525-UB 001155) which also fits the earlier Anschutz 522 and late production Anschutz 520* models.
Made from high quality blued steel the magazine has a bullet window, U shaped notch at the front to eliminate bullet shaving and is easily stripped for cleaning.
*This magazine will not fit early 520 models without modification: Anschutz added a stop lug pressed out from the right side of the magazine in late production 520s and following 525 models, there is a matching notch cut into the receiver to accommodate this. Earlier 520 models without the receiver lug notch will not allow the current version of the magazine to be fitted, unless the magazines is adapted (removing or flattening the lug).
Any ammunition pictured is for display purposes and is not included.