Walther PP
The Walther PP ( "Polizeipistole" , or police pistol ) series pistols are blowback-operated semi-automatic pistols , developed by the German arms manufacturer Carl Walther GmbH Sportwaffen . 
<triplet> Walther PP <subj> semi-automatic pistol <obj> subclass of <subj> Carl Walther GmbH Sportwaffen <obj> manufacturer