How an H&K VP9 works

The Heckler & Koch VP9 (known as SFP9 in Europe and Canada) is a polymer-framed semi-automatic striker-fired handgun. The VP designation in the name refers to Volkspistole which translates to "people's pistol", while SFP stands for “striker-fired pistol”. The 9 stands for the caliber designation of 9 mm. The VP9 is the third striker-fired pistol that HK has produced. A variant of the VP9, the VP40, is chambered for .40 S&W; the VP40 is known as SFP40 in Europe and Canada.

According to the manufacturer, Heckler & Koch (HK), the pistol was under development for more than four years before its release in June 2014. Originally, it was designed on request of the Bavarian State Police, to replace the HK P7. As HK has a long history with striker-fired pistols, they decided to update their lineup with a newly designed striker system that gives their pistols a single stage-like trigger feel with a clean break.

https://en.wikipedia.org/wiki/Heckler...

H&K VP9: full disassembly & assembly
   • H&K VP9: full disassembly & assembly  

Don't try to recreate what you see in this video, as this is gameplay. This video was created using the game World of Guns:
http://store.steampowered.com/app/262...
This game is also available on Google Play, App Store, Amazon and other platforms.