It's actually a MG-42 with a drum clip. She also has a K-98 strapped to her back, and a Lüger in hand. If you notice from her pendant, she's German.

Nazi gun toting maids?

...Hot.

It's written "Luger" (NOT with an "ü"), but the gun looks more like one of the so-called "Kampfpistolen", a kind of grenade launcher developed in 1941:
http://www.securityarms.com/20010315/galleryfiles/2000/2038.htm

Luger Handgun:
http://www.world.guns.ru/handguns/hg67-e.htm

The Iron Cross (Eisernes Kreuz) is a military decoration, not just a "pendant":
http://en.wikipedia.org/wiki/Iron_cross

Reminds me of Gunslinger Girls.

Fuck the guns, those boots are awesome.