The Gun:
To Install,

Unturned > Bundles > Items > Guns > (Drag the file "Endgame" into the "Guns" folder) > (Install The Ammo) > Done!



The Ammo:
To Install:

Unturned > Bundles > Items > Magazines > (Drag the file "Endgame_8" into "Magazines") > (Install the Scope) > Done!


The Scope:
To Install:

Unturned > Bundles > Items > Sights > (Drag the file "Endgame_Scope" into "Sights") > Done!