FN FNC: full disassembly & assembly

The rifle was developed between 1975–1977 for NATO standardization trials. The rifle’s design is based on the FNC 76 prototype, which itself originated from the commercially unsuccessful FN CAL rifle. This prototype was soon withdrawn from the NATO competition after performing poorly due to its rushed development. Later trials for the Swedish Armed Forces held between 1981–1982 using updated prototypes proved the utility and efficiency of the design, impressing both the Swedish military and Belgian Army staff back at home. The FNC was finally adopted by the Belgian Armed Forces in 1989, as a service-wide replacement for the 7.62×51mm NATO FN FAL, after having been issued in small numbers to airborne infantry units for several years.

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

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.