What is Heckler & Koch P9?
{{Infobox weapon |name=Heckler & Koch P9 | image= | image_size = |caption= |origin=[[West Germany]] |type=[[Semi-automatic pistol]] <!-- Type selection --> |is_ranged=yes <!-- Service history --> |service= 1969-present |used_by <!-- Production history --> |designer=[[Heckler & Koch]] Gmbh |design_date=1965-1969 |production_date=1969-c.1978 (P9/pre-73), 1970-1995 (P9S) |manufacturer= Heckler & Koch |variants=P9S, P9 SAO |number=SAO: 485; P9S: unknown <!-- General specifications --> |spec_label= |weight=880 g (31 oz), empty (.45 ACP) |length= 19.2 cm (7.5 in) |part_length= 10.2 cm (4 in) |height= 5.4 in <!-- Ranged weapon specifications --> |cartridge=[[9×19mm Parabellum]]<br/> [[.45 ACP]]<br/> [[7.65×21mm Parabellum]] |action=[[Blowback (arms)#Roller-delayed|Roller delayed]], [[Trigger (firearms)#Double-action.2Fsingle-action|Traditional Double Action]] |rate=[[Semi-automatic firearm|Semi-automatic]] |feed=9-round (9×19mm) or 7-round (.45 ACP) single column, detachable [[box magazine]] |range= |sights= }} The '''Heckler & Koch P9''' is a [[semi-automatic pistol]] from [[Heckler & Koch]] in [[9×19mm Parabellum]], [[.45 ACP]], and [[7.65×21mm Parabellum]]. It is the first pistol to use a variation of H&K's [[Blowback#Roller delayed blowback|roller delayed blowback]] system. [[Category:Pistols]] {{military-stub}}