AK-74N: full disassembly & assembly

The AK-74 (Russian: Автомат Калашникова образца 1974 года or "Kalashnikov automatic rifle model 1974") is an assault rifle developed in the early 1970s by Russian designer Mikhail Kalashnikov as the replacement for the earlier AKM (itself a refined version of the AK-47). It uses a smaller 5.45×39mm cartridge, replacing the 7.62×39mm chambering of earlier Kalashnikov-pattern weapons.

The AK-74 is also available in several "night-fighting" configurations, equipped with a side-rail used to mount sights. These variants, the AK-74N, AKS-74N and AKS-74UN can be used in conjunction with NSPU and NSPU-3 (1PN51) night sights, as well as optical sights such as the USP-1 (1P29).

https://en.wikipedia.org/wiki/AK-74

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.