Vz. 52: full disassembly & assembly

The vz. 52 is a shoulder-fired semi-automatic rifle with a tilting-bolt locking mechanism powered by an annular short-stroke gas piston system. The bolt is locked by two lugs that recess into slots machined into the receiver. However, unlike most vertically-locking breech mechanism, the rifle's bolt has the unusual feature of tipping the bolt frontally to lock the mechanism, whereas other tipping bolt designs tip the bolt to the rear. The piston is actuated by residual gases from the bore, vented into a sleeve surrounding the barrel to overcome the inertia of the bolt carrier, bolt and the resistance of the return spring in order to unlock the chamber, eject the empty cartridge casing and then introduce a new round into the chamber upon return to battery.

https://en.wikipedia.org/wiki/Vz._52_rifle

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/262410/
This game is also available on Google Play, App Store, Amazon and other platforms.

Видео Vz. 52: full disassembly & assembly канала Si vis pacem , para bellum.